2 LINUX ALLOCATED DEVICES (2.6+ version)
4 Maintained by Torben Mathiasen <device@lanana.org>
6 Last revised: 29 November 2006
8 This list is the Linux Device List, the official registry of allocated
9 device numbers and /dev directory nodes for the Linux operating
12 The latest version of this list is available from
13 http://www.lanana.org/docs/device-list/ or
14 ftp://ftp.kernel.org/pub/linux/docs/device-list/. This version may be
15 newer than the one distributed with the Linux kernel.
17 The LaTeX version of this document is no longer maintained.
19 This document is included by reference into the Filesystem Hierarchy
20 Standard (FHS). The FHS is available from http://www.pathname.com/fhs/.
22 Allocations marked (68k/Amiga) apply to Linux/68k on the Amiga
23 platform only. Allocations marked (68k/Atari) apply to Linux/68k on
24 the Atari platform only.
26 The symbol {2.6} means the allocation is obsolete and scheduled for
27 removal once kernel version 2.6 (or equivalent) is released. Some of these
28 allocations have already been removed.
30 This document is in the public domain. The author requests, however,
31 that semantically altered versions are not distributed without
32 permission of the author, assuming the author can be contacted without
33 an unreasonable effort.
35 In particular, please don't sent patches for this list to Linus, at
36 least not without contacting me first.
38 I do not have any information about these devices beyond what appears
39 on this list. Any such information requests will be deleted without
43 **** DEVICE DRIVERS AUTHORS PLEASE READ THIS ****
45 To have a major number allocated, or a minor number in situations
46 where that applies (e.g. busmice), please contact me with the
47 appropriate device information. Also, if you have additional
48 information regarding any of the devices listed below, or if I have
49 made a mistake, I would greatly appreciate a note.
51 I do, however, make a few requests about the nature of your report.
52 This is necessary for me to be able to keep this list up to date and
53 correct in a timely manner. First of all, *please* send it to the
54 correct address... <device@lanana.org>. I receive hundreds of email
55 messages a day, so mail sent to other addresses may very well get lost
56 in the avalanche. Please put in a descriptive subject, so I can find
57 your mail again should I need to. Too many people send me email
58 saying just "device number request" in the subject.
60 Second, please include a description of the device *in the same format
61 as this list*. The reason for this is that it is the only way I have
62 found to ensure I have all the requisite information to publish your
63 device and avoid conflicts.
65 Third, please don't assume that the distributed version of the list is
66 up to date. Due to the number of registrations I have to maintain it
67 in "batch mode", so there is likely additional registrations that
68 haven't been listed yet.
70 Finally, sometimes I have to play "namespace police." Please don't be
71 offended. I often get submissions for /dev names that would be bound
72 to cause conflicts down the road. I am trying to avoid getting in a
73 situation where we would have to suffer an incompatible forward
74 change. Therefore, please consult with me *before* you make your
75 device names and numbers in any way public, at least to the point
76 where it would be at all difficult to get them changed.
78 Your cooperation is appreciated.
81 0 Unnamed devices (e.g. non-device mounts)
82 0 = reserved as null device number
83 See block major 144, 145, 146 for expansion areas.
86 1 = /dev/mem Physical memory access
87 2 = /dev/kmem Kernel virtual memory access
88 3 = /dev/null Null device
89 4 = /dev/port I/O port access
90 5 = /dev/zero Null byte source
91 6 = /dev/core OBSOLETE - replaced by /proc/kcore
92 7 = /dev/full Returns ENOSPC on write
93 8 = /dev/random Nondeterministic random number gen.
94 9 = /dev/urandom Faster, less secure random number gen.
95 10 = /dev/aio Asynchronous I/O notification interface
96 11 = /dev/kmsg Writes to this come out as printk's
97 12 = /dev/oldmem Used by crashdump kernels to access
98 the memory of the kernel that crashed.
101 0 = /dev/ram0 First RAM disk
102 1 = /dev/ram1 Second RAM disk
104 250 = /dev/initrd Initial RAM disk {2.6}
106 Older kernels had /dev/ramdisk (1, 1) here.
107 /dev/initrd refers to a RAM disk which was preloaded
108 by the boot loader; newer kernels use /dev/ram0 for
111 2 char Pseudo-TTY masters
112 0 = /dev/ptyp0 First PTY master
113 1 = /dev/ptyp1 Second PTY master
115 255 = /dev/ptyef 256th PTY master
117 Pseudo-tty's are named as follows:
118 * Masters are "pty", slaves are "tty";
119 * the fourth letter is one of pqrstuvwxyzabcde indicating
120 the 1st through 16th series of 16 pseudo-ttys each, and
121 * the fifth letter is one of 0123456789abcdef indicating
122 the position within the series.
124 These are the old-style (BSD) PTY devices; Unix98
125 devices are on major 128 and above and use the PTY
126 master multiplex (/dev/ptmx) to acquire a PTY on
130 0 = /dev/fd0 Controller 0, drive 0, autodetect
131 1 = /dev/fd1 Controller 0, drive 1, autodetect
132 2 = /dev/fd2 Controller 0, drive 2, autodetect
133 3 = /dev/fd3 Controller 0, drive 3, autodetect
134 128 = /dev/fd4 Controller 1, drive 0, autodetect
135 129 = /dev/fd5 Controller 1, drive 1, autodetect
136 130 = /dev/fd6 Controller 1, drive 2, autodetect
137 131 = /dev/fd7 Controller 1, drive 3, autodetect
139 To specify format, add to the autodetect device number:
140 0 = /dev/fd? Autodetect format
141 4 = /dev/fd?d360 5.25" 360K in a 360K drive(1)
142 20 = /dev/fd?h360 5.25" 360K in a 1200K drive(1)
143 48 = /dev/fd?h410 5.25" 410K in a 1200K drive
144 64 = /dev/fd?h420 5.25" 420K in a 1200K drive
145 24 = /dev/fd?h720 5.25" 720K in a 1200K drive
146 80 = /dev/fd?h880 5.25" 880K in a 1200K drive(1)
147 8 = /dev/fd?h1200 5.25" 1200K in a 1200K drive(1)
148 40 = /dev/fd?h1440 5.25" 1440K in a 1200K drive(1)
149 56 = /dev/fd?h1476 5.25" 1476K in a 1200K drive
150 72 = /dev/fd?h1494 5.25" 1494K in a 1200K drive
151 92 = /dev/fd?h1600 5.25" 1600K in a 1200K drive(1)
153 12 = /dev/fd?u360 3.5" 360K Double Density(2)
154 16 = /dev/fd?u720 3.5" 720K Double Density(1)
155 120 = /dev/fd?u800 3.5" 800K Double Density(2)
156 52 = /dev/fd?u820 3.5" 820K Double Density
157 68 = /dev/fd?u830 3.5" 830K Double Density
158 84 = /dev/fd?u1040 3.5" 1040K Double Density(1)
159 88 = /dev/fd?u1120 3.5" 1120K Double Density(1)
160 28 = /dev/fd?u1440 3.5" 1440K High Density(1)
161 124 = /dev/fd?u1600 3.5" 1600K High Density(1)
162 44 = /dev/fd?u1680 3.5" 1680K High Density(3)
163 60 = /dev/fd?u1722 3.5" 1722K High Density
164 76 = /dev/fd?u1743 3.5" 1743K High Density
165 96 = /dev/fd?u1760 3.5" 1760K High Density
166 116 = /dev/fd?u1840 3.5" 1840K High Density(3)
167 100 = /dev/fd?u1920 3.5" 1920K High Density(1)
168 32 = /dev/fd?u2880 3.5" 2880K Extra Density(1)
169 104 = /dev/fd?u3200 3.5" 3200K Extra Density
170 108 = /dev/fd?u3520 3.5" 3520K Extra Density
171 112 = /dev/fd?u3840 3.5" 3840K Extra Density(1)
173 36 = /dev/fd?CompaQ Compaq 2880K drive; obsolete?
175 (1) Autodetectable format
176 (2) Autodetectable format in a Double Density (720K) drive only
177 (3) Autodetectable format in a High Density (1440K) drive only
179 NOTE: The letter in the device name (d, q, h or u)
180 signifies the type of drive: 5.25" Double Density (d),
181 5.25" Quad Density (q), 5.25" High Density (h) or 3.5"
182 (any model, u). The use of the capital letters D, H
183 and E for the 3.5" models have been deprecated, since
184 the drive type is insignificant for these devices.
186 3 char Pseudo-TTY slaves
187 0 = /dev/ttyp0 First PTY slave
188 1 = /dev/ttyp1 Second PTY slave
190 255 = /dev/ttyef 256th PTY slave
192 These are the old-style (BSD) PTY devices; Unix98
193 devices are on major 136 and above.
195 3 block First MFM, RLL and IDE hard disk/CD-ROM interface
196 0 = /dev/hda Master: whole disk (or CD-ROM)
197 64 = /dev/hdb Slave: whole disk (or CD-ROM)
199 For partitions, add to the whole disk device number:
200 0 = /dev/hd? Whole disk
201 1 = /dev/hd?1 First partition
202 2 = /dev/hd?2 Second partition
204 63 = /dev/hd?63 63rd partition
206 For Linux/i386, partitions 1-4 are the primary
207 partitions, and 5 and above are logical partitions.
208 Other versions of Linux use partitioning schemes
209 appropriate to their respective architectures.
212 0 = /dev/tty0 Current virtual console
214 1 = /dev/tty1 First virtual console
216 63 = /dev/tty63 63rd virtual console
217 64 = /dev/ttyS0 First UART serial port
219 255 = /dev/ttyS191 192nd UART serial port
221 UART serial ports refer to 8250/16450/16550 series devices.
223 Older versions of the Linux kernel used this major
224 number for BSD PTY devices. As of Linux 2.1.115, this
225 is no longer supported. Use major numbers 2 and 3.
227 4 block Aliases for dynamically allocated major devices to be used
228 when its not possible to create the real device nodes
229 because the root filesystem is mounted read-only.
233 5 char Alternate TTY devices
234 0 = /dev/tty Current TTY device
235 1 = /dev/console System console
236 2 = /dev/ptmx PTY master multiplex
237 64 = /dev/cua0 Callout device for ttyS0
239 255 = /dev/cua191 Callout device for ttyS191
241 (5,1) is /dev/console starting with Linux 2.1.71. See
242 the section on terminal devices for more information
245 6 char Parallel printer devices
246 0 = /dev/lp0 Parallel printer on parport0
247 1 = /dev/lp1 Parallel printer on parport1
250 Current Linux kernels no longer have a fixed mapping
251 between parallel ports and I/O addresses. Instead,
252 they are redirected through the parport multiplex layer.
254 7 char Virtual console capture devices
255 0 = /dev/vcs Current vc text contents
256 1 = /dev/vcs1 tty1 text contents
258 63 = /dev/vcs63 tty63 text contents
259 128 = /dev/vcsa Current vc text/attribute contents
260 129 = /dev/vcsa1 tty1 text/attribute contents
262 191 = /dev/vcsa63 tty63 text/attribute contents
264 NOTE: These devices permit both read and write access.
266 7 block Loopback devices
267 0 = /dev/loop0 First loop device
268 1 = /dev/loop1 Second loop device
271 The loop devices are used to mount filesystems not
272 associated with block devices. The binding to the
273 loop devices is handled by mount(8) or losetup(8).
275 8 block SCSI disk devices (0-15)
276 0 = /dev/sda First SCSI disk whole disk
277 16 = /dev/sdb Second SCSI disk whole disk
278 32 = /dev/sdc Third SCSI disk whole disk
280 240 = /dev/sdp Sixteenth SCSI disk whole disk
282 Partitions are handled in the same way as for IDE
283 disks (see major number 3) except that the limit on
286 9 char SCSI tape devices
287 0 = /dev/st0 First SCSI tape, mode 0
288 1 = /dev/st1 Second SCSI tape, mode 0
290 32 = /dev/st0l First SCSI tape, mode 1
291 33 = /dev/st1l Second SCSI tape, mode 1
293 64 = /dev/st0m First SCSI tape, mode 2
294 65 = /dev/st1m Second SCSI tape, mode 2
296 96 = /dev/st0a First SCSI tape, mode 3
297 97 = /dev/st1a Second SCSI tape, mode 3
299 128 = /dev/nst0 First SCSI tape, mode 0, no rewind
300 129 = /dev/nst1 Second SCSI tape, mode 0, no rewind
302 160 = /dev/nst0l First SCSI tape, mode 1, no rewind
303 161 = /dev/nst1l Second SCSI tape, mode 1, no rewind
305 192 = /dev/nst0m First SCSI tape, mode 2, no rewind
306 193 = /dev/nst1m Second SCSI tape, mode 2, no rewind
308 224 = /dev/nst0a First SCSI tape, mode 3, no rewind
309 225 = /dev/nst1a Second SCSI tape, mode 3, no rewind
312 "No rewind" refers to the omission of the default
313 automatic rewind on device close. The MTREW or MTOFFL
314 ioctl()'s can be used to rewind the tape regardless of
315 the device used to access it.
317 9 block Metadisk (RAID) devices
318 0 = /dev/md0 First metadisk group
319 1 = /dev/md1 Second metadisk group
322 The metadisk driver is used to span a
323 filesystem across multiple physical disks.
325 10 char Non-serial mice, misc features
326 0 = /dev/logibm Logitech bus mouse
327 1 = /dev/psaux PS/2-style mouse port
328 2 = /dev/inportbm Microsoft Inport bus mouse
329 3 = /dev/atibm ATI XL bus mouse
331 4 = /dev/amigamouse Amiga mouse (68k/Amiga)
332 5 = /dev/atarimouse Atari mouse
333 6 = /dev/sunmouse Sun mouse
334 7 = /dev/amigamouse1 Second Amiga mouse
335 8 = /dev/smouse Simple serial mouse driver
336 9 = /dev/pc110pad IBM PC-110 digitizer pad
337 10 = /dev/adbmouse Apple Desktop Bus mouse
338 11 = /dev/vrtpanel Vr41xx embedded touch panel
339 13 = /dev/vpcmouse Connectix Virtual PC Mouse
340 14 = /dev/touchscreen/ucb1x00 UCB 1x00 touchscreen
341 15 = /dev/touchscreen/mk712 MK712 touchscreen
342 128 = /dev/beep Fancy beep device
343 129 = /dev/modreq Kernel module load request {2.6}
344 130 = /dev/watchdog Watchdog timer port
345 131 = /dev/temperature Machine internal temperature
346 132 = /dev/hwtrap Hardware fault trap
347 133 = /dev/exttrp External device trap
348 134 = /dev/apm_bios Advanced Power Management BIOS
349 135 = /dev/rtc Real Time Clock
350 139 = /dev/openprom SPARC OpenBoot PROM
351 140 = /dev/relay8 Berkshire Products Octal relay card
352 141 = /dev/relay16 Berkshire Products ISO-16 relay card
353 142 = /dev/msr x86 model-specific registers {2.6}
354 143 = /dev/pciconf PCI configuration space
355 144 = /dev/nvram Non-volatile configuration RAM
356 145 = /dev/hfmodem Soundcard shortwave modem control {2.6}
357 146 = /dev/graphics Linux/SGI graphics device
358 147 = /dev/opengl Linux/SGI OpenGL pipe
359 148 = /dev/gfx Linux/SGI graphics effects device
360 149 = /dev/input/mouse Linux/SGI Irix emulation mouse
361 150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard
362 151 = /dev/led Front panel LEDs
363 152 = /dev/kpoll Kernel Poll Driver
364 153 = /dev/mergemem Memory merge device
365 154 = /dev/pmu Macintosh PowerBook power manager
366 155 = /dev/isictl MultiTech ISICom serial control
367 156 = /dev/lcd Front panel LCD display
368 157 = /dev/ac Applicom Intl Profibus card
369 158 = /dev/nwbutton Netwinder external button
370 159 = /dev/nwdebug Netwinder debug interface
371 160 = /dev/nwflash Netwinder flash memory
372 161 = /dev/userdma User-space DMA access
373 162 = /dev/smbus System Management Bus
374 163 = /dev/lik Logitech Internet Keyboard
375 164 = /dev/ipmo Intel Intelligent Platform Management
376 165 = /dev/vmmon VMWare virtual machine monitor
377 166 = /dev/i2o/ctl I2O configuration manager
378 167 = /dev/specialix_sxctl Specialix serial control
379 168 = /dev/tcldrv Technology Concepts serial control
380 169 = /dev/specialix_rioctl Specialix RIO serial control
381 170 = /dev/thinkpad/thinkpad IBM Thinkpad devices
382 171 = /dev/srripc QNX4 API IPC manager
383 172 = /dev/usemaclone Semaphore clone device
384 173 = /dev/ipmikcs Intelligent Platform Management
385 174 = /dev/uctrl SPARCbook 3 microcontroller
386 175 = /dev/agpgart AGP Graphics Address Remapping Table
387 176 = /dev/gtrsc Gorgy Timing radio clock
388 177 = /dev/cbm Serial CBM bus
389 178 = /dev/jsflash JavaStation OS flash SIMM
390 179 = /dev/xsvc High-speed shared-mem/semaphore service
391 180 = /dev/vrbuttons Vr41xx button input device
392 181 = /dev/toshiba Toshiba laptop SMM support
393 182 = /dev/perfctr Performance-monitoring counters
394 183 = /dev/hwrng Generic random number generator
395 184 = /dev/cpu/microcode CPU microcode update interface
396 186 = /dev/atomicps Atomic shapshot of process state data
397 187 = /dev/irnet IrNET device
398 188 = /dev/smbusbios SMBus BIOS
399 189 = /dev/ussp_ctl User space serial port control
400 190 = /dev/crash Mission Critical Linux crash dump facility
401 191 = /dev/pcl181 <information missing>
402 192 = /dev/nas_xbus NAS xbus LCD/buttons access
403 193 = /dev/d7s SPARC 7-segment display
404 194 = /dev/zkshim Zero-Knowledge network shim control
405 195 = /dev/elographics/e2201 Elographics touchscreen E271-2201
406 198 = /dev/sexec Signed executable interface
407 199 = /dev/scanners/cuecat :CueCat barcode scanner
408 200 = /dev/net/tun TAP/TUN network device
409 201 = /dev/button/gulpb Transmeta GULP-B buttons
410 202 = /dev/emd/ctl Enhanced Metadisk RAID (EMD) control
411 204 = /dev/video/em8300 EM8300 DVD decoder control
412 205 = /dev/video/em8300_mv EM8300 DVD decoder video
413 206 = /dev/video/em8300_ma EM8300 DVD decoder audio
414 207 = /dev/video/em8300_sp EM8300 DVD decoder subpicture
415 208 = /dev/compaq/cpqphpc Compaq PCI Hot Plug Controller
416 209 = /dev/compaq/cpqrid Compaq Remote Insight Driver
417 210 = /dev/impi/bt IMPI coprocessor block transfer
418 211 = /dev/impi/smic IMPI coprocessor stream interface
419 212 = /dev/watchdogs/0 First watchdog device
420 213 = /dev/watchdogs/1 Second watchdog device
421 214 = /dev/watchdogs/2 Third watchdog device
422 215 = /dev/watchdogs/3 Fourth watchdog device
423 216 = /dev/fujitsu/apanel Fujitsu/Siemens application panel
424 217 = /dev/ni/natmotn National Instruments Motion
425 218 = /dev/kchuid Inter-process chuid control
426 219 = /dev/modems/mwave MWave modem firmware upload
427 220 = /dev/mptctl Message passing technology (MPT) control
428 221 = /dev/mvista/hssdsi Montavista PICMG hot swap system driver
429 222 = /dev/mvista/hasi Montavista PICMG high availability
430 223 = /dev/input/uinput User level driver support for input
431 224 = /dev/tpm TCPA TPM driver
432 225 = /dev/pps Pulse Per Second driver
433 226 = /dev/systrace Systrace device
434 227 = /dev/mcelog X86_64 Machine Check Exception driver
435 228 = /dev/hpet HPET driver
436 229 = /dev/fuse Fuse (virtual filesystem in user-space)
437 230 = /dev/midishare MidiShare driver
438 240-254 Reserved for local use
439 255 Reserved for MISC_DYNAMIC_MINOR
441 11 char Raw keyboard device (Linux/SPARC only)
442 0 = /dev/kbd Raw keyboard device
444 11 char Serial Mux device (Linux/PA-RISC only)
445 0 = /dev/ttyB0 First mux port
446 1 = /dev/ttyB1 Second mux port
449 11 block SCSI CD-ROM devices
450 0 = /dev/scd0 First SCSI CD-ROM
451 1 = /dev/scd1 Second SCSI CD-ROM
454 The prefix /dev/sr (instead of /dev/scd) has been deprecated.
457 2 = /dev/ntpqic11 QIC-11, no rewind-on-close
458 3 = /dev/tpqic11 QIC-11, rewind-on-close
459 4 = /dev/ntpqic24 QIC-24, no rewind-on-close
460 5 = /dev/tpqic24 QIC-24, rewind-on-close
461 6 = /dev/ntpqic120 QIC-120, no rewind-on-close
462 7 = /dev/tpqic120 QIC-120, rewind-on-close
463 8 = /dev/ntpqic150 QIC-150, no rewind-on-close
464 9 = /dev/tpqic150 QIC-150, rewind-on-close
466 The device names specified are proposed -- if there
467 are "standard" names for these devices, please let me know.
469 12 block MSCDEX CD-ROM callback support {2.6}
470 0 = /dev/dos_cd0 First MSCDEX CD-ROM
471 1 = /dev/dos_cd1 Second MSCDEX CD-ROM
475 0 = /dev/input/js0 First joystick
476 1 = /dev/input/js1 Second joystick
478 32 = /dev/input/mouse0 First mouse
479 33 = /dev/input/mouse1 Second mouse
481 63 = /dev/input/mice Unified mouse
482 64 = /dev/input/event0 First event queue
483 65 = /dev/input/event1 Second event queue
486 Each device type has 5 bits (32 minors).
488 13 block 8-bit MFM/RLL/IDE controller
489 0 = /dev/xda First XT disk whole disk
490 64 = /dev/xdb Second XT disk whole disk
492 Partitions are handled in the same way as IDE disks
493 (see major number 3).
495 14 char Open Sound System (OSS)
496 0 = /dev/mixer Mixer control
497 1 = /dev/sequencer Audio sequencer
498 2 = /dev/midi00 First MIDI port
499 3 = /dev/dsp Digital audio
500 4 = /dev/audio Sun-compatible digital audio
501 6 = /dev/sndstat Sound card status information {2.6}
502 7 = /dev/audioctl SPARC audio control device
503 8 = /dev/sequencer2 Sequencer -- alternate device
504 16 = /dev/mixer1 Second soundcard mixer control
505 17 = /dev/patmgr0 Sequencer patch manager
506 18 = /dev/midi01 Second MIDI port
507 19 = /dev/dsp1 Second soundcard digital audio
508 20 = /dev/audio1 Second soundcard Sun digital audio
509 33 = /dev/patmgr1 Sequencer patch manager
510 34 = /dev/midi02 Third MIDI port
511 50 = /dev/midi03 Fourth MIDI port
513 14 block BIOS harddrive callback support {2.6}
514 0 = /dev/dos_hda First BIOS harddrive whole disk
515 64 = /dev/dos_hdb Second BIOS harddrive whole disk
516 128 = /dev/dos_hdc Third BIOS harddrive whole disk
517 192 = /dev/dos_hdd Fourth BIOS harddrive whole disk
519 Partitions are handled in the same way as IDE disks
520 (see major number 3).
523 0 = /dev/js0 First analog joystick
524 1 = /dev/js1 Second analog joystick
526 128 = /dev/djs0 First digital joystick
527 129 = /dev/djs1 Second digital joystick
529 15 block Sony CDU-31A/CDU-33A CD-ROM
530 0 = /dev/sonycd Sony CDU-31a CD-ROM
532 16 char Non-SCSI scanners
533 0 = /dev/gs4500 Genius 4500 handheld scanner
535 16 block GoldStar CD-ROM
536 0 = /dev/gscd GoldStar CD-ROM
538 17 char Chase serial card
539 0 = /dev/ttyH0 First Chase port
540 1 = /dev/ttyH1 Second Chase port
542 17 block Optics Storage CD-ROM
543 0 = /dev/optcd Optics Storage CD-ROM
545 18 char Chase serial card - alternate devices
546 0 = /dev/cuh0 Callout device for ttyH0
547 1 = /dev/cuh1 Callout device for ttyH1
549 18 block Sanyo CD-ROM
550 0 = /dev/sjcd Sanyo CD-ROM
552 19 char Cyclades serial card
553 0 = /dev/ttyC0 First Cyclades port
555 31 = /dev/ttyC31 32nd Cyclades port
557 19 block "Double" compressed disk
558 0 = /dev/double0 First compressed disk
560 7 = /dev/double7 Eighth compressed disk
561 128 = /dev/cdouble0 Mirror of first compressed disk
563 135 = /dev/cdouble7 Mirror of eighth compressed disk
565 See the Double documentation for the meaning of the
568 20 char Cyclades serial card - alternate devices
569 0 = /dev/cub0 Callout device for ttyC0
571 31 = /dev/cub31 Callout device for ttyC31
573 20 block Hitachi CD-ROM (under development)
574 0 = /dev/hitcd Hitachi CD-ROM
576 21 char Generic SCSI access
577 0 = /dev/sg0 First generic SCSI device
578 1 = /dev/sg1 Second generic SCSI device
581 Most distributions name these /dev/sga, /dev/sgb...;
582 this sets an unnecessary limit of 26 SCSI devices in
583 the system and is counter to standard Linux
584 device-naming practice.
586 21 block Acorn MFM hard drive interface
587 0 = /dev/mfma First MFM drive whole disk
588 64 = /dev/mfmb Second MFM drive whole disk
590 This device is used on the ARM-based Acorn RiscPC.
591 Partitions are handled the same way as for IDE disks
592 (see major number 3).
594 22 char Digiboard serial card
595 0 = /dev/ttyD0 First Digiboard port
596 1 = /dev/ttyD1 Second Digiboard port
598 22 block Second IDE hard disk/CD-ROM interface
599 0 = /dev/hdc Master: whole disk (or CD-ROM)
600 64 = /dev/hdd Slave: whole disk (or CD-ROM)
602 Partitions are handled the same way as for the first
603 interface (see major number 3).
605 23 char Digiboard serial card - alternate devices
606 0 = /dev/cud0 Callout device for ttyD0
607 1 = /dev/cud1 Callout device for ttyD1
609 23 block Mitsumi proprietary CD-ROM
610 0 = /dev/mcd Mitsumi CD-ROM
612 24 char Stallion serial card
613 0 = /dev/ttyE0 Stallion port 0 card 0
614 1 = /dev/ttyE1 Stallion port 1 card 0
616 64 = /dev/ttyE64 Stallion port 0 card 1
617 65 = /dev/ttyE65 Stallion port 1 card 1
619 128 = /dev/ttyE128 Stallion port 0 card 2
620 129 = /dev/ttyE129 Stallion port 1 card 2
622 192 = /dev/ttyE192 Stallion port 0 card 3
623 193 = /dev/ttyE193 Stallion port 1 card 3
625 24 block Sony CDU-535 CD-ROM
626 0 = /dev/cdu535 Sony CDU-535 CD-ROM
628 25 char Stallion serial card - alternate devices
629 0 = /dev/cue0 Callout device for ttyE0
630 1 = /dev/cue1 Callout device for ttyE1
632 64 = /dev/cue64 Callout device for ttyE64
633 65 = /dev/cue65 Callout device for ttyE65
635 128 = /dev/cue128 Callout device for ttyE128
636 129 = /dev/cue129 Callout device for ttyE129
638 192 = /dev/cue192 Callout device for ttyE192
639 193 = /dev/cue193 Callout device for ttyE193
641 25 block First Matsushita (Panasonic/SoundBlaster) CD-ROM
642 0 = /dev/sbpcd0 Panasonic CD-ROM controller 0 unit 0
643 1 = /dev/sbpcd1 Panasonic CD-ROM controller 0 unit 1
644 2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2
645 3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3
647 26 char Quanta WinVision frame grabber {2.6}
648 0 = /dev/wvisfgrab Quanta WinVision frame grabber
650 26 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM
651 0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0
652 1 = /dev/sbpcd5 Panasonic CD-ROM controller 1 unit 1
653 2 = /dev/sbpcd6 Panasonic CD-ROM controller 1 unit 2
654 3 = /dev/sbpcd7 Panasonic CD-ROM controller 1 unit 3
657 0 = /dev/qft0 Unit 0, rewind-on-close
658 1 = /dev/qft1 Unit 1, rewind-on-close
659 2 = /dev/qft2 Unit 2, rewind-on-close
660 3 = /dev/qft3 Unit 3, rewind-on-close
661 4 = /dev/nqft0 Unit 0, no rewind-on-close
662 5 = /dev/nqft1 Unit 1, no rewind-on-close
663 6 = /dev/nqft2 Unit 2, no rewind-on-close
664 7 = /dev/nqft3 Unit 3, no rewind-on-close
665 16 = /dev/zqft0 Unit 0, rewind-on-close, compression
666 17 = /dev/zqft1 Unit 1, rewind-on-close, compression
667 18 = /dev/zqft2 Unit 2, rewind-on-close, compression
668 19 = /dev/zqft3 Unit 3, rewind-on-close, compression
669 20 = /dev/nzqft0 Unit 0, no rewind-on-close, compression
670 21 = /dev/nzqft1 Unit 1, no rewind-on-close, compression
671 22 = /dev/nzqft2 Unit 2, no rewind-on-close, compression
672 23 = /dev/nzqft3 Unit 3, no rewind-on-close, compression
673 32 = /dev/rawqft0 Unit 0, rewind-on-close, no file marks
674 33 = /dev/rawqft1 Unit 1, rewind-on-close, no file marks
675 34 = /dev/rawqft2 Unit 2, rewind-on-close, no file marks
676 35 = /dev/rawqft3 Unit 3, rewind-on-close, no file marks
677 36 = /dev/nrawqft0 Unit 0, no rewind-on-close, no file marks
678 37 = /dev/nrawqft1 Unit 1, no rewind-on-close, no file marks
679 38 = /dev/nrawqft2 Unit 2, no rewind-on-close, no file marks
680 39 = /dev/nrawqft3 Unit 3, no rewind-on-close, no file marks
682 27 block Third Matsushita (Panasonic/SoundBlaster) CD-ROM
683 0 = /dev/sbpcd8 Panasonic CD-ROM controller 2 unit 0
684 1 = /dev/sbpcd9 Panasonic CD-ROM controller 2 unit 1
685 2 = /dev/sbpcd10 Panasonic CD-ROM controller 2 unit 2
686 3 = /dev/sbpcd11 Panasonic CD-ROM controller 2 unit 3
688 28 char Stallion serial card - card programming
689 0 = /dev/staliomem0 First Stallion card I/O memory
690 1 = /dev/staliomem1 Second Stallion card I/O memory
691 2 = /dev/staliomem2 Third Stallion card I/O memory
692 3 = /dev/staliomem3 Fourth Stallion card I/O memory
694 28 char Atari SLM ACSI laser printer (68k/Atari)
695 0 = /dev/slm0 First SLM laser printer
696 1 = /dev/slm1 Second SLM laser printer
698 28 block Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
699 0 = /dev/sbpcd12 Panasonic CD-ROM controller 3 unit 0
700 1 = /dev/sbpcd13 Panasonic CD-ROM controller 3 unit 1
701 2 = /dev/sbpcd14 Panasonic CD-ROM controller 3 unit 2
702 3 = /dev/sbpcd15 Panasonic CD-ROM controller 3 unit 3
704 28 block ACSI disk (68k/Atari)
705 0 = /dev/ada First ACSI disk whole disk
706 16 = /dev/adb Second ACSI disk whole disk
707 32 = /dev/adc Third ACSI disk whole disk
709 240 = /dev/adp 16th ACSI disk whole disk
711 Partitions are handled in the same way as for IDE
712 disks (see major number 3) except that the limit on
713 partitions is 15, like SCSI.
715 29 char Universal frame buffer
716 0 = /dev/fb0 First frame buffer
717 1 = /dev/fb1 Second frame buffer
719 31 = /dev/fb31 32nd frame buffer
721 29 block Aztech/Orchid/Okano/Wearnes CD-ROM
722 0 = /dev/aztcd Aztech CD-ROM
724 30 char iBCS-2 compatibility devices
725 0 = /dev/socksys Socket access
726 1 = /dev/spx SVR3 local X interface
727 32 = /dev/inet/ip Network access
738 Additionally, iBCS-2 requires the following links:
740 /dev/ip -> /dev/inet/ip
741 /dev/icmp -> /dev/inet/icmp
742 /dev/ggp -> /dev/inet/ggp
743 /dev/ipip -> /dev/inet/ipip
744 /dev/tcp -> /dev/inet/tcp
745 /dev/egp -> /dev/inet/egp
746 /dev/pup -> /dev/inet/pup
747 /dev/udp -> /dev/inet/udp
748 /dev/idp -> /dev/inet/idp
749 /dev/rawip -> /dev/inet/rawip
750 /dev/inet/arp -> /dev/inet/udp
751 /dev/inet/rip -> /dev/inet/udp
752 /dev/nfsd -> /dev/socksys
753 /dev/X0R -> /dev/null (? apparently not required ?)
755 30 block Philips LMS CM-205 CD-ROM
756 0 = /dev/cm205cd Philips LMS CM-205 CD-ROM
758 /dev/lmscd is an older name for this device. This
759 driver does not work with the CM-205MS CD-ROM.
762 0 = /dev/mpu401data MPU-401 data port
763 1 = /dev/mpu401stat MPU-401 status port
765 31 block ROM/flash memory card
766 0 = /dev/rom0 First ROM card (rw)
768 7 = /dev/rom7 Eighth ROM card (rw)
769 8 = /dev/rrom0 First ROM card (ro)
771 15 = /dev/rrom7 Eighth ROM card (ro)
772 16 = /dev/flash0 First flash memory card (rw)
774 23 = /dev/flash7 Eighth flash memory card (rw)
775 24 = /dev/rflash0 First flash memory card (ro)
777 31 = /dev/rflash7 Eighth flash memory card (ro)
779 The read-write (rw) devices support back-caching
780 written data in RAM, as well as writing to flash RAM
781 devices. The read-only devices (ro) support reading
784 32 char Specialix serial card
785 0 = /dev/ttyX0 First Specialix port
786 1 = /dev/ttyX1 Second Specialix port
788 32 block Philips LMS CM-206 CD-ROM
789 0 = /dev/cm206cd Philips LMS CM-206 CD-ROM
791 33 char Specialix serial card - alternate devices
792 0 = /dev/cux0 Callout device for ttyX0
793 1 = /dev/cux1 Callout device for ttyX1
795 33 block Third IDE hard disk/CD-ROM interface
796 0 = /dev/hde Master: whole disk (or CD-ROM)
797 64 = /dev/hdf Slave: whole disk (or CD-ROM)
799 Partitions are handled the same way as for the first
800 interface (see major number 3).
802 34 char Z8530 HDLC driver
803 0 = /dev/scc0 First Z8530, first port
804 1 = /dev/scc1 First Z8530, second port
805 2 = /dev/scc2 Second Z8530, first port
806 3 = /dev/scc3 Second Z8530, second port
809 In a previous version these devices were named
810 /dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
813 34 block Fourth IDE hard disk/CD-ROM interface
814 0 = /dev/hdg Master: whole disk (or CD-ROM)
815 64 = /dev/hdh Slave: whole disk (or CD-ROM)
817 Partitions are handled the same way as for the first
818 interface (see major number 3).
820 35 char tclmidi MIDI driver
821 0 = /dev/midi0 First MIDI port, kernel timed
822 1 = /dev/midi1 Second MIDI port, kernel timed
823 2 = /dev/midi2 Third MIDI port, kernel timed
824 3 = /dev/midi3 Fourth MIDI port, kernel timed
825 64 = /dev/rmidi0 First MIDI port, untimed
826 65 = /dev/rmidi1 Second MIDI port, untimed
827 66 = /dev/rmidi2 Third MIDI port, untimed
828 67 = /dev/rmidi3 Fourth MIDI port, untimed
829 128 = /dev/smpte0 First MIDI port, SMPTE timed
830 129 = /dev/smpte1 Second MIDI port, SMPTE timed
831 130 = /dev/smpte2 Third MIDI port, SMPTE timed
832 131 = /dev/smpte3 Fourth MIDI port, SMPTE timed
834 35 block Slow memory ramdisk
835 0 = /dev/slram Slow memory ramdisk
837 36 char Netlink support
838 0 = /dev/route Routing, device updates, kernel to user
839 1 = /dev/skip enSKIP security cache control
840 3 = /dev/fwmonitor Firewall packet copies
841 16 = /dev/tap0 First Ethertap device
843 31 = /dev/tap15 16th Ethertap device
845 36 block MCA ESDI hard disk
846 0 = /dev/eda First ESDI disk whole disk
847 64 = /dev/edb Second ESDI disk whole disk
850 Partitions are handled in the same way as IDE disks
851 (see major number 3).
854 0 = /dev/ht0 First IDE tape
855 1 = /dev/ht1 Second IDE tape
857 128 = /dev/nht0 First IDE tape, no rewind-on-close
858 129 = /dev/nht1 Second IDE tape, no rewind-on-close
861 Currently, only one IDE tape drive is supported.
863 37 block Zorro II ramdisk
864 0 = /dev/z2ram Zorro II ramdisk
866 38 char Myricom PCI Myrinet board
867 0 = /dev/mlanai0 First Myrinet board
868 1 = /dev/mlanai1 Second Myrinet board
871 This device is used for status query, board control
872 and "user level packet I/O." This board is also
873 accessible as a standard networking "eth" device.
875 38 block Reserved for Linux/AP+
877 39 char ML-16P experimental I/O board
878 0 = /dev/ml16pa-a0 First card, first analog channel
879 1 = /dev/ml16pa-a1 First card, second analog channel
881 15 = /dev/ml16pa-a15 First card, 16th analog channel
882 16 = /dev/ml16pa-d First card, digital lines
883 17 = /dev/ml16pa-c0 First card, first counter/timer
884 18 = /dev/ml16pa-c1 First card, second counter/timer
885 19 = /dev/ml16pa-c2 First card, third counter/timer
886 32 = /dev/ml16pb-a0 Second card, first analog channel
887 33 = /dev/ml16pb-a1 Second card, second analog channel
889 47 = /dev/ml16pb-a15 Second card, 16th analog channel
890 48 = /dev/ml16pb-d Second card, digital lines
891 49 = /dev/ml16pb-c0 Second card, first counter/timer
892 50 = /dev/ml16pb-c1 Second card, second counter/timer
893 51 = /dev/ml16pb-c2 Second card, third counter/timer
895 39 block Reserved for Linux/AP+
897 40 char Matrox Meteor frame grabber {2.6}
898 0 = /dev/mmetfgrab Matrox Meteor frame grabber
900 40 block Syquest EZ135 parallel port removable drive
901 0 = /dev/eza Parallel EZ135 drive, whole disk
903 This device is obsolete and will be removed in a
904 future version of Linux. It has been replaced with
905 the parallel port IDE disk driver at major number 45.
906 Partitions are handled in the same way as IDE disks
907 (see major number 3).
909 41 char Yet Another Micro Monitor
910 0 = /dev/yamm Yet Another Micro Monitor
912 41 block MicroSolutions BackPack parallel port CD-ROM
913 0 = /dev/bpcd BackPack CD-ROM
915 This device is obsolete and will be removed in a
916 future version of Linux. It has been replaced with
917 the parallel port ATAPI CD-ROM driver at major number 46.
919 42 char Demo/sample use
921 42 block Demo/sample use
923 This number is intended for use in sample code, as
924 well as a general "example" device number. It
925 should never be used for a device driver that is being
926 distributed; either obtain an official number or use
927 the local/experimental range. The sudden addition or
928 removal of a driver with this number should not cause
929 ill effects to the system (bugs excepted.)
931 IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
932 DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
934 43 char isdn4linux virtual modem
935 0 = /dev/ttyI0 First virtual modem
937 63 = /dev/ttyI63 64th virtual modem
939 43 block Network block devices
940 0 = /dev/nb0 First network block device
941 1 = /dev/nb1 Second network block device
944 Network Block Device is somehow similar to loopback
945 devices: If you read from it, it sends packet across
946 network asking server for data. If you write to it, it
947 sends packet telling server to write. It could be used
948 to mounting filesystems over the net, swapping over
949 the net, implementing block device in userland etc.
951 44 char isdn4linux virtual modem - alternate devices
952 0 = /dev/cui0 Callout device for ttyI0
954 63 = /dev/cui63 Callout device for ttyI63
956 44 block Flash Translation Layer (FTL) filesystems
957 0 = /dev/ftla FTL on first Memory Technology Device
958 16 = /dev/ftlb FTL on second Memory Technology Device
959 32 = /dev/ftlc FTL on third Memory Technology Device
961 240 = /dev/ftlp FTL on 16th Memory Technology Device
963 Partitions are handled in the same way as for IDE
964 disks (see major number 3) except that the partition
965 limit is 15 rather than 63 per disk (same as SCSI.)
967 45 char isdn4linux ISDN BRI driver
968 0 = /dev/isdn0 First virtual B channel raw data
970 63 = /dev/isdn63 64th virtual B channel raw data
971 64 = /dev/isdnctrl0 First channel control/debug
973 127 = /dev/isdnctrl63 64th channel control/debug
975 128 = /dev/ippp0 First SyncPPP device
977 191 = /dev/ippp63 64th SyncPPP device
979 255 = /dev/isdninfo ISDN monitor interface
981 45 block Parallel port IDE disk devices
982 0 = /dev/pda First parallel port IDE disk
983 16 = /dev/pdb Second parallel port IDE disk
984 32 = /dev/pdc Third parallel port IDE disk
985 48 = /dev/pdd Fourth parallel port IDE disk
987 Partitions are handled in the same way as for IDE
988 disks (see major number 3) except that the partition
989 limit is 15 rather than 63 per disk.
991 46 char Comtrol Rocketport serial card
992 0 = /dev/ttyR0 First Rocketport port
993 1 = /dev/ttyR1 Second Rocketport port
995 46 block Parallel port ATAPI CD-ROM devices
996 0 = /dev/pcd0 First parallel port ATAPI CD-ROM
997 1 = /dev/pcd1 Second parallel port ATAPI CD-ROM
998 2 = /dev/pcd2 Third parallel port ATAPI CD-ROM
999 3 = /dev/pcd3 Fourth parallel port ATAPI CD-ROM
1001 47 char Comtrol Rocketport serial card - alternate devices
1002 0 = /dev/cur0 Callout device for ttyR0
1003 1 = /dev/cur1 Callout device for ttyR1
1005 47 block Parallel port ATAPI disk devices
1006 0 = /dev/pf0 First parallel port ATAPI disk
1007 1 = /dev/pf1 Second parallel port ATAPI disk
1008 2 = /dev/pf2 Third parallel port ATAPI disk
1009 3 = /dev/pf3 Fourth parallel port ATAPI disk
1011 This driver is intended for floppy disks and similar
1012 devices and hence does not support partitioning.
1014 48 char SDL RISCom serial card
1015 0 = /dev/ttyL0 First RISCom port
1016 1 = /dev/ttyL1 Second RISCom port
1018 48 block Mylex DAC960 PCI RAID controller; first controller
1019 0 = /dev/rd/c0d0 First disk, whole disk
1020 8 = /dev/rd/c0d1 Second disk, whole disk
1022 248 = /dev/rd/c0d31 32nd disk, whole disk
1025 0 = /dev/rd/c?d? Whole disk
1026 1 = /dev/rd/c?d?p1 First partition
1028 7 = /dev/rd/c?d?p7 Seventh partition
1030 49 char SDL RISCom serial card - alternate devices
1031 0 = /dev/cul0 Callout device for ttyL0
1032 1 = /dev/cul1 Callout device for ttyL1
1034 49 block Mylex DAC960 PCI RAID controller; second controller
1035 0 = /dev/rd/c1d0 First disk, whole disk
1036 8 = /dev/rd/c1d1 Second disk, whole disk
1038 248 = /dev/rd/c1d31 32nd disk, whole disk
1040 Partitions are handled as for major 48.
1042 50 char Reserved for GLINT
1044 50 block Mylex DAC960 PCI RAID controller; third controller
1045 0 = /dev/rd/c2d0 First disk, whole disk
1046 8 = /dev/rd/c2d1 Second disk, whole disk
1048 248 = /dev/rd/c2d31 32nd disk, whole disk
1050 51 char Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
1051 0 = /dev/bc0 First Baycom radio modem
1052 1 = /dev/bc1 Second Baycom radio modem
1054 51 block Mylex DAC960 PCI RAID controller; fourth controller
1055 0 = /dev/rd/c3d0 First disk, whole disk
1056 8 = /dev/rd/c3d1 Second disk, whole disk
1058 248 = /dev/rd/c3d31 32nd disk, whole disk
1060 Partitions are handled as for major 48.
1062 52 char Spellcaster DataComm/BRI ISDN card
1063 0 = /dev/dcbri0 First DataComm card
1064 1 = /dev/dcbri1 Second DataComm card
1065 2 = /dev/dcbri2 Third DataComm card
1066 3 = /dev/dcbri3 Fourth DataComm card
1068 52 block Mylex DAC960 PCI RAID controller; fifth controller
1069 0 = /dev/rd/c4d0 First disk, whole disk
1070 8 = /dev/rd/c4d1 Second disk, whole disk
1072 248 = /dev/rd/c4d31 32nd disk, whole disk
1074 Partitions are handled as for major 48.
1076 53 char BDM interface for remote debugging MC683xx microcontrollers
1077 0 = /dev/pd_bdm0 PD BDM interface on lp0
1078 1 = /dev/pd_bdm1 PD BDM interface on lp1
1079 2 = /dev/pd_bdm2 PD BDM interface on lp2
1080 4 = /dev/icd_bdm0 ICD BDM interface on lp0
1081 5 = /dev/icd_bdm1 ICD BDM interface on lp1
1082 6 = /dev/icd_bdm2 ICD BDM interface on lp2
1084 This device is used for the interfacing to the MC683xx
1085 microcontrollers via Background Debug Mode by use of a
1086 Parallel Port interface. PD is the Motorola Public
1087 Domain Interface and ICD is the commercial interface
1090 53 block Mylex DAC960 PCI RAID controller; sixth controller
1091 0 = /dev/rd/c5d0 First disk, whole disk
1092 8 = /dev/rd/c5d1 Second disk, whole disk
1094 248 = /dev/rd/c5d31 32nd disk, whole disk
1096 Partitions are handled as for major 48.
1098 54 char Electrocardiognosis Holter serial card
1099 0 = /dev/holter0 First Holter port
1100 1 = /dev/holter1 Second Holter port
1101 2 = /dev/holter2 Third Holter port
1103 A custom serial card used by Electrocardiognosis SRL
1104 <mseritan@ottonel.pub.ro> to transfer data from Holter
1105 24-hour heart monitoring equipment.
1107 54 block Mylex DAC960 PCI RAID controller; seventh controller
1108 0 = /dev/rd/c6d0 First disk, whole disk
1109 8 = /dev/rd/c6d1 Second disk, whole disk
1111 248 = /dev/rd/c6d31 32nd disk, whole disk
1113 Partitions are handled as for major 48.
1115 55 char DSP56001 digital signal processor
1116 0 = /dev/dsp56k First DSP56001
1118 55 block Mylex DAC960 PCI RAID controller; eighth controller
1119 0 = /dev/rd/c7d0 First disk, whole disk
1120 8 = /dev/rd/c7d1 Second disk, whole disk
1122 248 = /dev/rd/c7d31 32nd disk, whole disk
1124 Partitions are handled as for major 48.
1126 56 char Apple Desktop Bus
1127 0 = /dev/adb ADB bus control
1129 Additional devices will be added to this number, all
1130 starting with /dev/adb.
1132 56 block Fifth IDE hard disk/CD-ROM interface
1133 0 = /dev/hdi Master: whole disk (or CD-ROM)
1134 64 = /dev/hdj Slave: whole disk (or CD-ROM)
1136 Partitions are handled the same way as for the first
1137 interface (see major number 3).
1139 57 char Hayes ESP serial card
1140 0 = /dev/ttyP0 First ESP port
1141 1 = /dev/ttyP1 Second ESP port
1144 57 block Sixth IDE hard disk/CD-ROM interface
1145 0 = /dev/hdk Master: whole disk (or CD-ROM)
1146 64 = /dev/hdl Slave: whole disk (or CD-ROM)
1148 Partitions are handled the same way as for the first
1149 interface (see major number 3).
1151 58 char Hayes ESP serial card - alternate devices
1152 0 = /dev/cup0 Callout device for ttyP0
1153 1 = /dev/cup1 Callout device for ttyP1
1156 58 block Reserved for logical volume manager
1158 59 char sf firewall package
1159 0 = /dev/firewall Communication with sf kernel module
1161 59 block Generic PDA filesystem device
1162 0 = /dev/pda0 First PDA device
1163 1 = /dev/pda1 Second PDA device
1166 The pda devices are used to mount filesystems on
1167 remote pda's (basically slow handheld machines with
1168 proprietary OS's and limited memory and storage
1169 running small fs translation drivers) through serial /
1170 IRDA / parallel links.
1172 NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
1174 60-63 char LOCAL/EXPERIMENTAL USE
1176 60-63 block LOCAL/EXPERIMENTAL USE
1177 Allocated for local/experimental use. For devices not
1178 assigned official numbers, these ranges should be
1179 used in order to avoid conflicting with future assignments.
1181 64 char ENskip kernel encryption package
1182 0 = /dev/enskip Communication with ENskip kernel module
1184 64 block Scramdisk/DriveCrypt encrypted devices
1185 0 = /dev/scramdisk/master Master node for ioctls
1186 1 = /dev/scramdisk/1 First encrypted device
1187 2 = /dev/scramdisk/2 Second encrypted device
1189 255 = /dev/scramdisk/255 255th encrypted device
1191 The filename of the encrypted container and the passwords
1192 are sent via ioctls (using the sdmount tool) to the master
1193 node which then activates them via one of the
1194 /dev/scramdisk/x nodes for loop mounting (all handled
1195 through the sdmount tool).
1197 Requested by: andy@scramdisklinux.org
1199 65 char Sundance "plink" Transputer boards (obsolete, unused)
1200 0 = /dev/plink0 First plink device
1201 1 = /dev/plink1 Second plink device
1202 2 = /dev/plink2 Third plink device
1203 3 = /dev/plink3 Fourth plink device
1204 64 = /dev/rplink0 First plink device, raw
1205 65 = /dev/rplink1 Second plink device, raw
1206 66 = /dev/rplink2 Third plink device, raw
1207 67 = /dev/rplink3 Fourth plink device, raw
1208 128 = /dev/plink0d First plink device, debug
1209 129 = /dev/plink1d Second plink device, debug
1210 130 = /dev/plink2d Third plink device, debug
1211 131 = /dev/plink3d Fourth plink device, debug
1212 192 = /dev/rplink0d First plink device, raw, debug
1213 193 = /dev/rplink1d Second plink device, raw, debug
1214 194 = /dev/rplink2d Third plink device, raw, debug
1215 195 = /dev/rplink3d Fourth plink device, raw, debug
1217 This is a commercial driver; contact James Howes
1218 <jth@prosig.demon.co.uk> for information.
1220 65 block SCSI disk devices (16-31)
1221 0 = /dev/sdq 17th SCSI disk whole disk
1222 16 = /dev/sdr 18th SCSI disk whole disk
1223 32 = /dev/sds 19th SCSI disk whole disk
1225 240 = /dev/sdaf 32nd SCSI disk whole disk
1227 Partitions are handled in the same way as for IDE
1228 disks (see major number 3) except that the limit on
1231 66 char YARC PowerPC PCI coprocessor card
1232 0 = /dev/yppcpci0 First YARC card
1233 1 = /dev/yppcpci1 Second YARC card
1236 66 block SCSI disk devices (32-47)
1237 0 = /dev/sdag 33th SCSI disk whole disk
1238 16 = /dev/sdah 34th SCSI disk whole disk
1239 32 = /dev/sdai 35th SCSI disk whole disk
1241 240 = /dev/sdav 48nd SCSI disk whole disk
1243 Partitions are handled in the same way as for IDE
1244 disks (see major number 3) except that the limit on
1247 67 char Coda network file system
1248 0 = /dev/cfs0 Coda cache manager
1250 See http://www.coda.cs.cmu.edu for information about Coda.
1252 67 block SCSI disk devices (48-63)
1253 0 = /dev/sdaw 49th SCSI disk whole disk
1254 16 = /dev/sdax 50th SCSI disk whole disk
1255 32 = /dev/sday 51st SCSI disk whole disk
1257 240 = /dev/sdbl 64th SCSI disk whole disk
1259 Partitions are handled in the same way as for IDE
1260 disks (see major number 3) except that the limit on
1263 68 char CAPI 2.0 interface
1264 0 = /dev/capi20 Control device
1265 1 = /dev/capi20.00 First CAPI 2.0 application
1266 2 = /dev/capi20.01 Second CAPI 2.0 application
1268 20 = /dev/capi20.19 19th CAPI 2.0 application
1270 ISDN CAPI 2.0 driver for use with CAPI 2.0
1271 applications; currently supports the AVM B1 card.
1273 68 block SCSI disk devices (64-79)
1274 0 = /dev/sdbm 65th SCSI disk whole disk
1275 16 = /dev/sdbn 66th SCSI disk whole disk
1276 32 = /dev/sdbo 67th SCSI disk whole disk
1278 240 = /dev/sdcb 80th SCSI disk whole disk
1280 Partitions are handled in the same way as for IDE
1281 disks (see major number 3) except that the limit on
1284 69 char MA16 numeric accelerator card
1285 0 = /dev/ma16 Board memory access
1287 69 block SCSI disk devices (80-95)
1288 0 = /dev/sdcc 81st SCSI disk whole disk
1289 16 = /dev/sdcd 82nd SCSI disk whole disk
1290 32 = /dev/sdce 83th SCSI disk whole disk
1292 240 = /dev/sdcr 96th SCSI disk whole disk
1294 Partitions are handled in the same way as for IDE
1295 disks (see major number 3) except that the limit on
1298 70 char SpellCaster Protocol Services Interface
1299 0 = /dev/apscfg Configuration interface
1300 1 = /dev/apsauth Authentication interface
1301 2 = /dev/apslog Logging interface
1302 3 = /dev/apsdbg Debugging interface
1303 64 = /dev/apsisdn ISDN command interface
1304 65 = /dev/apsasync Async command interface
1305 128 = /dev/apsmon Monitor interface
1307 70 block SCSI disk devices (96-111)
1308 0 = /dev/sdcs 97th SCSI disk whole disk
1309 16 = /dev/sdct 98th SCSI disk whole disk
1310 32 = /dev/sdcu 99th SCSI disk whole disk
1312 240 = /dev/sddh 112nd SCSI disk whole disk
1314 Partitions are handled in the same way as for IDE
1315 disks (see major number 3) except that the limit on
1318 71 char Computone IntelliPort II serial card
1319 0 = /dev/ttyF0 IntelliPort II board 0, port 0
1320 1 = /dev/ttyF1 IntelliPort II board 0, port 1
1322 63 = /dev/ttyF63 IntelliPort II board 0, port 63
1323 64 = /dev/ttyF64 IntelliPort II board 1, port 0
1324 65 = /dev/ttyF65 IntelliPort II board 1, port 1
1326 127 = /dev/ttyF127 IntelliPort II board 1, port 63
1327 128 = /dev/ttyF128 IntelliPort II board 2, port 0
1328 129 = /dev/ttyF129 IntelliPort II board 2, port 1
1330 191 = /dev/ttyF191 IntelliPort II board 2, port 63
1331 192 = /dev/ttyF192 IntelliPort II board 3, port 0
1332 193 = /dev/ttyF193 IntelliPort II board 3, port 1
1334 255 = /dev/ttyF255 IntelliPort II board 3, port 63
1336 71 block SCSI disk devices (112-127)
1337 0 = /dev/sddi 113th SCSI disk whole disk
1338 16 = /dev/sddj 114th SCSI disk whole disk
1339 32 = /dev/sddk 115th SCSI disk whole disk
1341 240 = /dev/sddx 128th SCSI disk whole disk
1343 Partitions are handled in the same way as for IDE
1344 disks (see major number 3) except that the limit on
1347 72 char Computone IntelliPort II serial card - alternate devices
1348 0 = /dev/cuf0 Callout device for ttyF0
1349 1 = /dev/cuf1 Callout device for ttyF1
1351 63 = /dev/cuf63 Callout device for ttyF63
1352 64 = /dev/cuf64 Callout device for ttyF64
1353 65 = /dev/cuf65 Callout device for ttyF65
1355 127 = /dev/cuf127 Callout device for ttyF127
1356 128 = /dev/cuf128 Callout device for ttyF128
1357 129 = /dev/cuf129 Callout device for ttyF129
1359 191 = /dev/cuf191 Callout device for ttyF191
1360 192 = /dev/cuf192 Callout device for ttyF192
1361 193 = /dev/cuf193 Callout device for ttyF193
1363 255 = /dev/cuf255 Callout device for ttyF255
1365 72 block Compaq Intelligent Drive Array, first controller
1366 0 = /dev/ida/c0d0 First logical drive whole disk
1367 16 = /dev/ida/c0d1 Second logical drive whole disk
1369 240 = /dev/ida/c0d15 16th logical drive whole disk
1371 Partitions are handled the same way as for Mylex
1372 DAC960 (see major number 48) except that the limit on
1375 73 char Computone IntelliPort II serial card - control devices
1376 0 = /dev/ip2ipl0 Loadware device for board 0
1377 1 = /dev/ip2stat0 Status device for board 0
1378 4 = /dev/ip2ipl1 Loadware device for board 1
1379 5 = /dev/ip2stat1 Status device for board 1
1380 8 = /dev/ip2ipl2 Loadware device for board 2
1381 9 = /dev/ip2stat2 Status device for board 2
1382 12 = /dev/ip2ipl3 Loadware device for board 3
1383 13 = /dev/ip2stat3 Status device for board 3
1385 73 block Compaq Intelligent Drive Array, second controller
1386 0 = /dev/ida/c1d0 First logical drive whole disk
1387 16 = /dev/ida/c1d1 Second logical drive whole disk
1389 240 = /dev/ida/c1d15 16th logical drive whole disk
1391 Partitions are handled the same way as for Mylex
1392 DAC960 (see major number 48) except that the limit on
1396 0 = /dev/SCI/0 SCI device 0
1397 1 = /dev/SCI/1 SCI device 1
1400 Currently for Dolphin Interconnect Solutions' PCI-SCI
1403 74 block Compaq Intelligent Drive Array, third controller
1404 0 = /dev/ida/c2d0 First logical drive whole disk
1405 16 = /dev/ida/c2d1 Second logical drive whole disk
1407 240 = /dev/ida/c2d15 16th logical drive whole disk
1409 Partitions are handled the same way as for Mylex
1410 DAC960 (see major number 48) except that the limit on
1413 75 char Specialix IO8+ serial card
1414 0 = /dev/ttyW0 First IO8+ port, first card
1415 1 = /dev/ttyW1 Second IO8+ port, first card
1417 8 = /dev/ttyW8 First IO8+ port, second card
1420 75 block Compaq Intelligent Drive Array, fourth controller
1421 0 = /dev/ida/c3d0 First logical drive whole disk
1422 16 = /dev/ida/c3d1 Second logical drive whole disk
1424 240 = /dev/ida/c3d15 16th logical drive whole disk
1426 Partitions are handled the same way as for Mylex
1427 DAC960 (see major number 48) except that the limit on
1430 76 char Specialix IO8+ serial card - alternate devices
1431 0 = /dev/cuw0 Callout device for ttyW0
1432 1 = /dev/cuw1 Callout device for ttyW1
1434 8 = /dev/cuw8 Callout device for ttyW8
1437 76 block Compaq Intelligent Drive Array, fifth controller
1438 0 = /dev/ida/c4d0 First logical drive whole disk
1439 16 = /dev/ida/c4d1 Second logical drive whole disk
1441 240 = /dev/ida/c4d15 16th logical drive whole disk
1443 Partitions are handled the same way as for Mylex
1444 DAC960 (see major number 48) except that the limit on
1448 77 char ComScire Quantum Noise Generator
1449 0 = /dev/qng ComScire Quantum Noise Generator
1451 77 block Compaq Intelligent Drive Array, sixth controller
1452 0 = /dev/ida/c5d0 First logical drive whole disk
1453 16 = /dev/ida/c5d1 Second logical drive whole disk
1455 240 = /dev/ida/c5d15 16th logical drive whole disk
1457 Partitions are handled the same way as for Mylex
1458 DAC960 (see major number 48) except that the limit on
1461 78 char PAM Software's multimodem boards
1462 0 = /dev/ttyM0 First PAM modem
1463 1 = /dev/ttyM1 Second PAM modem
1466 78 block Compaq Intelligent Drive Array, seventh controller
1467 0 = /dev/ida/c6d0 First logical drive whole disk
1468 16 = /dev/ida/c6d1 Second logical drive whole disk
1470 240 = /dev/ida/c6d15 16th logical drive whole disk
1472 Partitions are handled the same way as for Mylex
1473 DAC960 (see major number 48) except that the limit on
1476 79 char PAM Software's multimodem boards - alternate devices
1477 0 = /dev/cum0 Callout device for ttyM0
1478 1 = /dev/cum1 Callout device for ttyM1
1481 79 block Compaq Intelligent Drive Array, eighth controller
1482 0 = /dev/ida/c7d0 First logical drive whole disk
1483 16 = /dev/ida/c7d1 Second logical drive whole disk
1485 240 = /dev/ida/c715 16th logical drive whole disk
1487 Partitions are handled the same way as for Mylex
1488 DAC960 (see major number 48) except that the limit on
1491 80 char Photometrics AT200 CCD camera
1492 0 = /dev/at200 Photometrics AT200 CCD camera
1494 80 block I2O hard disk
1495 0 = /dev/i2o/hda First I2O hard disk, whole disk
1496 16 = /dev/i2o/hdb Second I2O hard disk, whole disk
1498 240 = /dev/i2o/hdp 16th I2O hard disk, whole disk
1500 Partitions are handled in the same way as for IDE
1501 disks (see major number 3) except that the limit on
1505 0 = /dev/video0 Video capture/overlay device
1507 63 = /dev/video63 Video capture/overlay device
1508 64 = /dev/radio0 Radio device
1510 127 = /dev/radio63 Radio device
1511 192 = /dev/vtx0 Teletext device
1513 223 = /dev/vtx31 Teletext device
1514 224 = /dev/vbi0 Vertical blank interrupt
1516 255 = /dev/vbi31 Vertical blank interrupt
1518 81 block I2O hard disk
1519 0 = /dev/i2o/hdq 17th I2O hard disk, whole disk
1520 16 = /dev/i2o/hdr 18th I2O hard disk, whole disk
1522 240 = /dev/i2o/hdaf 32nd I2O hard disk, whole disk
1524 Partitions are handled in the same way as for IDE
1525 disks (see major number 3) except that the limit on
1528 82 char WiNRADiO communications receiver card
1529 0 = /dev/winradio0 First WiNRADiO card
1530 1 = /dev/winradio1 Second WiNRADiO card
1533 The driver and documentation may be obtained from
1534 http://www.proximity.com.au/~brian/winradio/
1536 82 block I2O hard disk
1537 0 = /dev/i2o/hdag 33rd I2O hard disk, whole disk
1538 16 = /dev/i2o/hdah 34th I2O hard disk, whole disk
1540 240 = /dev/i2o/hdav 48th I2O hard disk, whole disk
1542 Partitions are handled in the same way as for IDE
1543 disks (see major number 3) except that the limit on
1546 83 char Matrox mga_vid video driver
1547 0 = /dev/mga_vid0 1st video card
1548 1 = /dev/mga_vid1 2nd video card
1549 2 = /dev/mga_vid2 3rd video card
1551 15 = /dev/mga_vid15 16th video card
1553 83 block I2O hard disk
1554 0 = /dev/i2o/hdaw 49th I2O hard disk, whole disk
1555 16 = /dev/i2o/hdax 50th I2O hard disk, whole disk
1557 240 = /dev/i2o/hdbl 64th I2O hard disk, whole disk
1559 Partitions are handled in the same way as for IDE
1560 disks (see major number 3) except that the limit on
1563 84 char Ikon 1011[57] Versatec Greensheet Interface
1564 0 = /dev/ihcp0 First Greensheet port
1565 1 = /dev/ihcp1 Second Greensheet port
1567 84 block I2O hard disk
1568 0 = /dev/i2o/hdbm 65th I2O hard disk, whole disk
1569 16 = /dev/i2o/hdbn 66th I2O hard disk, whole disk
1571 240 = /dev/i2o/hdcb 80th I2O hard disk, whole disk
1573 Partitions are handled in the same way as for IDE
1574 disks (see major number 3) except that the limit on
1577 85 char Linux/SGI shared memory input queue
1578 0 = /dev/shmiq Master shared input queue
1579 1 = /dev/qcntl0 First device pushed
1580 2 = /dev/qcntl1 Second device pushed
1583 85 block I2O hard disk
1584 0 = /dev/i2o/hdcc 81st I2O hard disk, whole disk
1585 16 = /dev/i2o/hdcd 82nd I2O hard disk, whole disk
1587 240 = /dev/i2o/hdcr 96th I2O hard disk, whole disk
1589 Partitions are handled in the same way as for IDE
1590 disks (see major number 3) except that the limit on
1593 86 char SCSI media changer
1594 0 = /dev/sch0 First SCSI media changer
1595 1 = /dev/sch1 Second SCSI media changer
1598 86 block I2O hard disk
1599 0 = /dev/i2o/hdcs 97th I2O hard disk, whole disk
1600 16 = /dev/i2o/hdct 98th I2O hard disk, whole disk
1602 240 = /dev/i2o/hddh 112th I2O hard disk, whole disk
1604 Partitions are handled in the same way as for IDE
1605 disks (see major number 3) except that the limit on
1608 87 char Sony Control-A1 stereo control bus
1609 0 = /dev/controla0 First device on chain
1610 1 = /dev/controla1 Second device on chain
1613 87 block I2O hard disk
1614 0 = /dev/i2o/hddi 113rd I2O hard disk, whole disk
1615 16 = /dev/i2o/hddj 114th I2O hard disk, whole disk
1617 240 = /dev/i2o/hddx 128th I2O hard disk, whole disk
1619 Partitions are handled in the same way as for IDE
1620 disks (see major number 3) except that the limit on
1623 88 char COMX synchronous serial card
1624 0 = /dev/comx0 COMX channel 0
1625 1 = /dev/comx1 COMX channel 1
1628 88 block Seventh IDE hard disk/CD-ROM interface
1629 0 = /dev/hdm Master: whole disk (or CD-ROM)
1630 64 = /dev/hdn Slave: whole disk (or CD-ROM)
1632 Partitions are handled the same way as for the first
1633 interface (see major number 3).
1635 89 char I2C bus interface
1636 0 = /dev/i2c-0 First I2C adapter
1637 1 = /dev/i2c-1 Second I2C adapter
1640 89 block Eighth IDE hard disk/CD-ROM interface
1641 0 = /dev/hdo Master: whole disk (or CD-ROM)
1642 64 = /dev/hdp Slave: whole disk (or CD-ROM)
1644 Partitions are handled the same way as for the first
1645 interface (see major number 3).
1647 90 char Memory Technology Device (RAM, ROM, Flash)
1648 0 = /dev/mtd0 First MTD (rw)
1649 1 = /dev/mtdr0 First MTD (ro)
1651 30 = /dev/mtd15 16th MTD (rw)
1652 31 = /dev/mtdr15 16th MTD (ro)
1654 90 block Ninth IDE hard disk/CD-ROM interface
1655 0 = /dev/hdq Master: whole disk (or CD-ROM)
1656 64 = /dev/hdr Slave: whole disk (or CD-ROM)
1658 Partitions are handled the same way as for the first
1659 interface (see major number 3).
1661 91 char CAN-Bus devices
1662 0 = /dev/can0 First CAN-Bus controller
1663 1 = /dev/can1 Second CAN-Bus controller
1666 91 block Tenth IDE hard disk/CD-ROM interface
1667 0 = /dev/hds Master: whole disk (or CD-ROM)
1668 64 = /dev/hdt Slave: whole disk (or CD-ROM)
1670 Partitions are handled the same way as for the first
1671 interface (see major number 3).
1673 92 char Reserved for ith Kommunikationstechnik MIC ISDN card
1675 92 block PPDD encrypted disk driver
1676 0 = /dev/ppdd0 First encrypted disk
1677 1 = /dev/ppdd1 Second encrypted disk
1680 Partitions are handled in the same way as for IDE
1681 disks (see major number 3) except that the limit on
1684 93 char IBM Smart Capture Card frame grabber {2.6}
1685 0 = /dev/iscc0 First Smart Capture Card
1686 1 = /dev/iscc1 Second Smart Capture Card
1688 128 = /dev/isccctl0 First Smart Capture Card control
1689 129 = /dev/isccctl1 Second Smart Capture Card control
1692 93 block NAND Flash Translation Layer filesystem
1693 0 = /dev/nftla First NFTL layer
1694 16 = /dev/nftlb Second NFTL layer
1696 240 = /dev/nftlp 16th NTFL layer
1698 94 char miroVIDEO DC10/30 capture/playback device {2.6}
1699 0 = /dev/dcxx0 First capture card
1700 1 = /dev/dcxx1 Second capture card
1703 94 block IBM S/390 DASD block storage
1704 0 = /dev/dasda First DASD device, major
1705 1 = /dev/dasda1 First DASD device, block 1
1706 2 = /dev/dasda2 First DASD device, block 2
1707 3 = /dev/dasda3 First DASD device, block 3
1708 4 = /dev/dasdb Second DASD device, major
1709 5 = /dev/dasdb1 Second DASD device, block 1
1710 6 = /dev/dasdb2 Second DASD device, block 2
1711 7 = /dev/dasdb3 Second DASD device, block 3
1715 0 = /dev/ipl Filter control device/log file
1716 1 = /dev/ipnat NAT control device/log file
1717 2 = /dev/ipstate State information log file
1718 3 = /dev/ipauth Authentication control device/log file
1721 96 char Parallel port ATAPI tape devices
1722 0 = /dev/pt0 First parallel port ATAPI tape
1723 1 = /dev/pt1 Second parallel port ATAPI tape
1725 128 = /dev/npt0 First p.p. ATAPI tape, no rewind
1726 129 = /dev/npt1 Second p.p. ATAPI tape, no rewind
1729 96 block Inverse NAND Flash Translation Layer
1730 0 = /dev/inftla First INFTL layer
1731 16 = /dev/inftlb Second INFTL layer
1733 240 = /dev/inftlp 16th INTFL layer
1735 97 char Parallel port generic ATAPI interface
1736 0 = /dev/pg0 First parallel port ATAPI device
1737 1 = /dev/pg1 Second parallel port ATAPI device
1738 2 = /dev/pg2 Third parallel port ATAPI device
1739 3 = /dev/pg3 Fourth parallel port ATAPI device
1741 These devices support the same API as the generic SCSI
1744 98 char Control and Measurement Device (comedi)
1745 0 = /dev/comedi0 First comedi device
1746 1 = /dev/comedi1 Second comedi device
1749 See http://stm.lbl.gov/comedi or http://www.llp.fu-berlin.de/.
1751 98 block User-mode virtual block device
1752 0 = /dev/ubda First user-mode block device
1753 16 = /dev/udbb Second user-mode block device
1756 Partitions are handled in the same way as for IDE
1757 disks (see major number 3) except that the limit on
1760 This device is used by the user-mode virtual kernel port.
1762 99 char Raw parallel ports
1763 0 = /dev/parport0 First parallel port
1764 1 = /dev/parport1 Second parallel port
1767 99 block JavaStation flash disk
1768 0 = /dev/jsfd JavaStation flash disk
1770 100 char Telephony for Linux
1771 0 = /dev/phone0 First telephony device
1772 1 = /dev/phone1 Second telephony device
1775 101 char Motorola DSP 56xxx board
1776 0 = /dev/mdspstat Status information
1777 1 = /dev/mdsp1 First DSP board I/O controls
1779 16 = /dev/mdsp16 16th DSP board I/O controls
1781 101 block AMI HyperDisk RAID controller
1782 0 = /dev/amiraid/ar0 First array whole disk
1783 16 = /dev/amiraid/ar1 Second array whole disk
1785 240 = /dev/amiraid/ar15 16th array whole disk
1787 For each device, partitions are added as:
1788 0 = /dev/amiraid/ar? Whole disk
1789 1 = /dev/amiraid/ar?p1 First partition
1790 2 = /dev/amiraid/ar?p2 Second partition
1792 15 = /dev/amiraid/ar?p15 15th partition
1794 102 char Philips SAA5249 Teletext signal decoder {2.6}
1795 0 = /dev/tlk0 First Teletext decoder
1796 1 = /dev/tlk1 Second Teletext decoder
1797 2 = /dev/tlk2 Third Teletext decoder
1798 3 = /dev/tlk3 Fourth Teletext decoder
1800 102 block Compressed block device
1801 0 = /dev/cbd/a First compressed block device, whole device
1802 16 = /dev/cbd/b Second compressed block device, whole device
1804 240 = /dev/cbd/p 16th compressed block device, whole device
1806 Partitions are handled in the same way as for IDE
1807 disks (see major number 3) except that the limit on
1810 103 char Arla network file system
1811 0 = /dev/nnpfs0 First NNPFS device
1812 1 = /dev/nnpfs1 Second NNPFS device
1814 Arla is a free clone of the Andrew File System, AFS.
1815 The NNPFS device gives user mode filesystem
1816 implementations a kernel presence for caching and easy
1817 mounting. For more information about the project,
1818 write to <arla-drinkers@stacken.kth.se> or see
1819 http://www.stacken.kth.se/project/arla/
1821 103 block Audit device
1822 0 = /dev/audit Audit device
1824 104 char Flash BIOS support
1826 104 block Compaq Next Generation Drive Array, first controller
1827 0 = /dev/cciss/c0d0 First logical drive, whole disk
1828 16 = /dev/cciss/c0d1 Second logical drive, whole disk
1830 240 = /dev/cciss/c0d15 16th logical drive, whole disk
1832 Partitions are handled the same way as for Mylex
1833 DAC960 (see major number 48) except that the limit on
1836 105 char Comtrol VS-1000 serial controller
1837 0 = /dev/ttyV0 First VS-1000 port
1838 1 = /dev/ttyV1 Second VS-1000 port
1841 105 block Compaq Next Generation Drive Array, second controller
1842 0 = /dev/cciss/c1d0 First logical drive, whole disk
1843 16 = /dev/cciss/c1d1 Second logical drive, whole disk
1845 240 = /dev/cciss/c1d15 16th logical drive, whole disk
1847 Partitions are handled the same way as for Mylex
1848 DAC960 (see major number 48) except that the limit on
1851 106 char Comtrol VS-1000 serial controller - alternate devices
1852 0 = /dev/cuv0 First VS-1000 port
1853 1 = /dev/cuv1 Second VS-1000 port
1856 106 block Compaq Next Generation Drive Array, third controller
1857 0 = /dev/cciss/c2d0 First logical drive, whole disk
1858 16 = /dev/cciss/c2d1 Second logical drive, whole disk
1860 240 = /dev/cciss/c2d15 16th logical drive, whole disk
1862 Partitions are handled the same way as for Mylex
1863 DAC960 (see major number 48) except that the limit on
1866 107 char 3Dfx Voodoo Graphics device
1867 0 = /dev/3dfx Primary 3Dfx graphics device
1869 107 block Compaq Next Generation Drive Array, fourth controller
1870 0 = /dev/cciss/c3d0 First logical drive, whole disk
1871 16 = /dev/cciss/c3d1 Second logical drive, whole disk
1873 240 = /dev/cciss/c3d15 16th logical drive, whole disk
1875 Partitions are handled the same way as for Mylex
1876 DAC960 (see major number 48) except that the limit on
1879 108 char Device independent PPP interface
1880 0 = /dev/ppp Device independent PPP interface
1882 108 block Compaq Next Generation Drive Array, fifth controller
1883 0 = /dev/cciss/c4d0 First logical drive, whole disk
1884 16 = /dev/cciss/c4d1 Second logical drive, whole disk
1886 240 = /dev/cciss/c4d15 16th logical drive, whole disk
1888 Partitions are handled the same way as for Mylex
1889 DAC960 (see major number 48) except that the limit on
1892 109 char Reserved for logical volume manager
1894 109 block Compaq Next Generation Drive Array, sixth controller
1895 0 = /dev/cciss/c5d0 First logical drive, whole disk
1896 16 = /dev/cciss/c5d1 Second logical drive, whole disk
1898 240 = /dev/cciss/c5d15 16th logical drive, whole disk
1900 Partitions are handled the same way as for Mylex
1901 DAC960 (see major number 48) except that the limit on
1904 110 char miroMEDIA Surround board
1905 0 = /dev/srnd0 First miroMEDIA Surround board
1906 1 = /dev/srnd1 Second miroMEDIA Surround board
1909 110 block Compaq Next Generation Drive Array, seventh controller
1910 0 = /dev/cciss/c6d0 First logical drive, whole disk
1911 16 = /dev/cciss/c6d1 Second logical drive, whole disk
1913 240 = /dev/cciss/c6d15 16th logical drive, whole disk
1915 Partitions are handled the same way as for Mylex
1916 DAC960 (see major number 48) except that the limit on
1919 111 char Philips SAA7146-based audio/video card {2.6}
1920 0 = /dev/av0 First A/V card
1921 1 = /dev/av1 Second A/V card
1924 111 block Compaq Next Generation Drive Array, eighth controller
1925 0 = /dev/cciss/c7d0 First logical drive, whole disk
1926 16 = /dev/cciss/c7d1 Second logical drive, whole disk
1928 240 = /dev/cciss/c7d15 16th logical drive, whole disk
1930 Partitions are handled the same way as for Mylex
1931 DAC960 (see major number 48) except that the limit on
1934 112 char ISI serial card
1935 0 = /dev/ttyM0 First ISI port
1936 1 = /dev/ttyM1 Second ISI port
1939 There is currently a device-naming conflict between
1940 these and PAM multimodems (major 78).
1942 112 block IBM iSeries virtual disk
1943 0 = /dev/iseries/vda First virtual disk, whole disk
1944 8 = /dev/iseries/vdb Second virtual disk, whole disk
1946 200 = /dev/iseries/vdz 26th virtual disk, whole disk
1947 208 = /dev/iseries/vdaa 27th virtual disk, whole disk
1949 248 = /dev/iseries/vdaf 32nd virtual disk, whole disk
1951 Partitions are handled in the same way as for IDE
1952 disks (see major number 3) except that the limit on
1955 113 char ISI serial card - alternate devices
1956 0 = /dev/cum0 Callout device for ttyM0
1957 1 = /dev/cum1 Callout device for ttyM1
1960 113 block IBM iSeries virtual CD-ROM
1961 0 = /dev/iseries/vcda First virtual CD-ROM
1962 1 = /dev/iseries/vcdb Second virtual CD-ROM
1965 114 char Picture Elements ISE board
1966 0 = /dev/ise0 First ISE board
1967 1 = /dev/ise1 Second ISE board
1969 128 = /dev/isex0 Control node for first ISE board
1970 129 = /dev/isex1 Control node for second ISE board
1973 The ISE board is an embedded computer, optimized for
1974 image processing. The /dev/iseN nodes are the general
1975 I/O access to the board, the /dev/isex0 nodes command
1976 nodes used to control the board.
1978 114 block IDE BIOS powered software RAID interfaces such as the
1982 1 = /dev/ataraid/d0p1
1983 2 = /dev/ataraid/d0p2
1985 16 = /dev/ataraid/d1
1986 17 = /dev/ataraid/d1p1
1987 18 = /dev/ataraid/d1p2
1989 255 = /dev/ataraid/d15p15
1991 Partitions are handled in the same way as for IDE
1992 disks (see major number 3) except that the limit on
1995 115 char TI link cable devices (115 was formerly the console driver speaker)
1996 0 = /dev/tipar0 Parallel cable on first parallel port
1998 7 = /dev/tipar7 Parallel cable on seventh parallel port
2000 8 = /dev/tiser0 Serial cable on first serial port
2002 15 = /dev/tiser7 Serial cable on seventh serial port
2004 16 = /dev/tiusb0 First USB cable
2006 47 = /dev/tiusb31 32nd USB cable
2008 115 block NetWare (NWFS) Devices (0-255)
2010 The NWFS (NetWare) devices are used to present a
2011 collection of NetWare Mirror Groups or NetWare
2012 Partitions as a logical storage segment for
2013 use in mounting NetWare volumes. A maximum of
2014 256 NetWare volumes can be supported in a single
2017 http://www.kernel.org/pub/linux/kernel/people/jmerkey/nwfs
2019 0 = /dev/nwfs/v0 First NetWare (NWFS) Logical Volume
2020 1 = /dev/nwfs/v1 Second NetWare (NWFS) Logical Volume
2021 2 = /dev/nwfs/v2 Third NetWare (NWFS) Logical Volume
2023 255 = /dev/nwfs/v255 Last NetWare (NWFS) Logical Volume
2025 116 char Advanced Linux Sound Driver (ALSA)
2027 116 block MicroMemory battery backed RAM adapter (NVRAM)
2028 Supports 16 boards, 15 partitions each.
2029 Requested by neilb at cse.unsw.edu.au.
2031 0 = /dev/umem/d0 Whole of first board
2032 1 = /dev/umem/d0p1 First partition of first board
2033 2 = /dev/umem/d0p2 Second partition of first board
2034 15 = /dev/umem/d0p15 15th partition of first board
2036 16 = /dev/umem/d1 Whole of second board
2037 17 = /dev/umem/d1p1 First partition of second board
2039 255= /dev/umem/d15p15 15th partition of 16th board.
2041 117 char COSA/SRP synchronous serial card
2042 0 = /dev/cosa0c0 1st board, 1st channel
2043 1 = /dev/cosa0c1 1st board, 2nd channel
2045 16 = /dev/cosa1c0 2nd board, 1st channel
2046 17 = /dev/cosa1c1 2nd board, 2nd channel
2049 117 block Enterprise Volume Management System (EVMS)
2051 The EVMS driver uses a layered, plug-in model to provide
2052 unparalleled flexibility and extensibility in managing
2053 storage. This allows for easy expansion or customization
2054 of various levels of volume management. Requested by
2055 Mark Peloquin (peloquin at us.ibm.com).
2057 Note: EVMS populates and manages all the devnodes in
2060 http://sf.net/projects/evms
2062 0 = /dev/evms/block_device EVMS block device
2063 1 = /dev/evms/legacyname1 First EVMS legacy device
2064 2 = /dev/evms/legacyname2 Second EVMS legacy device
2066 Both ranges can grow (down or up) until they meet.
2068 254 = /dev/evms/EVMSname2 Second EVMS native device
2069 255 = /dev/evms/EVMSname1 First EVMS native device
2071 Note: legacyname(s) are derived from the normal legacy
2072 device names. For example, /dev/hda5 would become
2075 118 char IBM Cryptographic Accelerator
2076 0 = /dev/ica Virtual interface to all IBM Crypto Accelerators
2077 1 = /dev/ica0 IBMCA Device 0
2078 2 = /dev/ica1 IBMCA Device 1
2081 119 char VMware virtual network control
2082 0 = /dev/vmnet0 1st virtual network
2083 1 = /dev/vmnet1 2nd virtual network
2086 120-127 char LOCAL/EXPERIMENTAL USE
2088 120-127 block LOCAL/EXPERIMENTAL USE
2089 Allocated for local/experimental use. For devices not
2090 assigned official numbers, these ranges should be
2091 used in order to avoid conflicting with future assignments.
2093 128-135 char Unix98 PTY masters
2095 These devices should not have corresponding device
2096 nodes; instead they should be accessed through the
2097 /dev/ptmx cloning interface.
2099 128 block SCSI disk devices (128-143)
2100 0 = /dev/sddy 129th SCSI disk whole disk
2101 16 = /dev/sddz 130th SCSI disk whole disk
2102 32 = /dev/sdea 131th SCSI disk whole disk
2104 240 = /dev/sden 144th SCSI disk whole disk
2106 Partitions are handled in the same way as for IDE
2107 disks (see major number 3) except that the limit on
2110 129 block SCSI disk devices (144-159)
2111 0 = /dev/sdeo 145th SCSI disk whole disk
2112 16 = /dev/sdep 146th SCSI disk whole disk
2113 32 = /dev/sdeq 147th SCSI disk whole disk
2115 240 = /dev/sdfd 160th SCSI disk whole disk
2117 Partitions are handled in the same way as for IDE
2118 disks (see major number 3) except that the limit on
2121 130 char (Misc devices)
2123 130 block SCSI disk devices (160-175)
2124 0 = /dev/sdfe 161st SCSI disk whole disk
2125 16 = /dev/sdff 162nd SCSI disk whole disk
2126 32 = /dev/sdfg 163rd SCSI disk whole disk
2128 240 = /dev/sdft 176th SCSI disk whole disk
2130 Partitions are handled in the same way as for IDE
2131 disks (see major number 3) except that the limit on
2134 131 block SCSI disk devices (176-191)
2135 0 = /dev/sdfu 177th SCSI disk whole disk
2136 16 = /dev/sdfv 178th SCSI disk whole disk
2137 32 = /dev/sdfw 179th SCSI disk whole disk
2139 240 = /dev/sdgj 192nd SCSI disk whole disk
2141 Partitions are handled in the same way as for IDE
2142 disks (see major number 3) except that the limit on
2145 132 block SCSI disk devices (192-207)
2146 0 = /dev/sdgk 193rd SCSI disk whole disk
2147 16 = /dev/sdgl 194th SCSI disk whole disk
2148 32 = /dev/sdgm 195th SCSI disk whole disk
2150 240 = /dev/sdgz 208th SCSI disk whole disk
2152 Partitions are handled in the same way as for IDE
2153 disks (see major number 3) except that the limit on
2156 133 block SCSI disk devices (208-223)
2157 0 = /dev/sdha 209th SCSI disk whole disk
2158 16 = /dev/sdhb 210th SCSI disk whole disk
2159 32 = /dev/sdhc 211th SCSI disk whole disk
2161 240 = /dev/sdhp 224th SCSI disk whole disk
2163 Partitions are handled in the same way as for IDE
2164 disks (see major number 3) except that the limit on
2167 134 block SCSI disk devices (224-239)
2168 0 = /dev/sdhq 225th SCSI disk whole disk
2169 16 = /dev/sdhr 226th SCSI disk whole disk
2170 32 = /dev/sdhs 227th SCSI disk whole disk
2172 240 = /dev/sdif 240th SCSI disk whole disk
2174 Partitions are handled in the same way as for IDE
2175 disks (see major number 3) except that the limit on
2178 135 block SCSI disk devices (240-255)
2179 0 = /dev/sdig 241st SCSI disk whole disk
2180 16 = /dev/sdih 242nd SCSI disk whole disk
2181 32 = /dev/sdih 243rd SCSI disk whole disk
2183 240 = /dev/sdiv 256th SCSI disk whole disk
2185 Partitions are handled in the same way as for IDE
2186 disks (see major number 3) except that the limit on
2189 136-143 char Unix98 PTY slaves
2190 0 = /dev/pts/0 First Unix98 pseudo-TTY
2191 1 = /dev/pts/1 Second Unix98 pseudo-TTY
2194 These device nodes are automatically generated with
2195 the proper permissions and modes by mounting the
2196 devpts filesystem onto /dev/pts with the appropriate
2197 mount options (distribution dependent, however, on
2198 *most* distributions the appropriate options are
2199 "mode=0620,gid=<gid of the "tty" group>".)
2201 136 block Mylex DAC960 PCI RAID controller; ninth controller
2202 0 = /dev/rd/c8d0 First disk, whole disk
2203 8 = /dev/rd/c8d1 Second disk, whole disk
2205 248 = /dev/rd/c8d31 32nd disk, whole disk
2207 Partitions are handled as for major 48.
2209 137 block Mylex DAC960 PCI RAID controller; tenth controller
2210 0 = /dev/rd/c9d0 First disk, whole disk
2211 8 = /dev/rd/c9d1 Second disk, whole disk
2213 248 = /dev/rd/c9d31 32nd disk, whole disk
2215 Partitions are handled as for major 48.
2217 138 block Mylex DAC960 PCI RAID controller; eleventh controller
2218 0 = /dev/rd/c10d0 First disk, whole disk
2219 8 = /dev/rd/c10d1 Second disk, whole disk
2221 248 = /dev/rd/c10d31 32nd disk, whole disk
2223 Partitions are handled as for major 48.
2225 139 block Mylex DAC960 PCI RAID controller; twelfth controller
2226 0 = /dev/rd/c11d0 First disk, whole disk
2227 8 = /dev/rd/c11d1 Second disk, whole disk
2229 248 = /dev/rd/c11d31 32nd disk, whole disk
2231 Partitions are handled as for major 48.
2233 140 block Mylex DAC960 PCI RAID controller; thirteenth controller
2234 0 = /dev/rd/c12d0 First disk, whole disk
2235 8 = /dev/rd/c12d1 Second disk, whole disk
2237 248 = /dev/rd/c12d31 32nd disk, whole disk
2239 Partitions are handled as for major 48.
2241 141 block Mylex DAC960 PCI RAID controller; fourteenth controller
2242 0 = /dev/rd/c13d0 First disk, whole disk
2243 8 = /dev/rd/c13d1 Second disk, whole disk
2245 248 = /dev/rd/c13d31 32nd disk, whole disk
2247 Partitions are handled as for major 48.
2249 142 block Mylex DAC960 PCI RAID controller; fifteenth controller
2250 0 = /dev/rd/c14d0 First disk, whole disk
2251 8 = /dev/rd/c14d1 Second disk, whole disk
2253 248 = /dev/rd/c14d31 32nd disk, whole disk
2255 Partitions are handled as for major 48.
2257 143 block Mylex DAC960 PCI RAID controller; sixteenth controller
2258 0 = /dev/rd/c15d0 First disk, whole disk
2259 8 = /dev/rd/c15d1 Second disk, whole disk
2261 248 = /dev/rd/c15d31 32nd disk, whole disk
2263 Partitions are handled as for major 48.
2265 144 char Encapsulated PPP
2266 0 = /dev/pppox0 First PPP over Ethernet
2268 63 = /dev/pppox63 64th PPP over Ethernet
2270 This is primarily used for ADSL.
2272 The SST 5136-DN DeviceNet interface driver has been
2273 relocated to major 183 due to an unfortunate conflict.
2275 144 block Expansion Area #1 for more non-device (e.g. NFS) mounts
2276 0 = mounted device 256
2277 255 = mounted device 511
2279 145 char SAM9407-based soundcard
2281 1 = /dev/sam0_sequencer
2282 2 = /dev/sam0_midi00
2285 6 = /dev/sam0_sndstat
2286 18 = /dev/sam0_midi01
2287 34 = /dev/sam0_midi02
2288 50 = /dev/sam0_midi03
2289 64 = /dev/sam1_mixer
2291 128 = /dev/sam2_mixer
2293 192 = /dev/sam3_mixer
2296 Device functions match OSS, but offer a number of
2297 addons, which are sam9407 specific. OSS can be
2298 operated simultaneously, taking care of the codec.
2300 145 block Expansion Area #2 for more non-device (e.g. NFS) mounts
2301 0 = mounted device 512
2302 255 = mounted device 767
2304 146 char SYSTRAM SCRAMNet mirrored-memory network
2305 0 = /dev/scramnet0 First SCRAMNet device
2306 1 = /dev/scramnet1 Second SCRAMNet device
2309 146 block Expansion Area #3 for more non-device (e.g. NFS) mounts
2310 0 = mounted device 768
2311 255 = mounted device 1023
2313 147 char Aureal Semiconductor Vortex Audio device
2314 0 = /dev/aureal0 First Aureal Vortex
2315 1 = /dev/aureal1 Second Aureal Vortex
2318 147 block Distributed Replicated Block Device (DRBD)
2319 0 = /dev/drbd0 First DRBD device
2320 1 = /dev/drbd1 Second DRBD device
2323 148 char Technology Concepts serial card
2324 0 = /dev/ttyT0 First TCL port
2325 1 = /dev/ttyT1 Second TCL port
2328 149 char Technology Concepts serial card - alternate devices
2329 0 = /dev/cut0 Callout device for ttyT0
2330 1 = /dev/cut0 Callout device for ttyT1
2333 150 char Real-Time Linux FIFOs
2334 0 = /dev/rtf0 First RTLinux FIFO
2335 1 = /dev/rtf1 Second RTLinux FIFO
2338 151 char DPT I2O SmartRaid V controller
2339 0 = /dev/dpti0 First DPT I2O adapter
2340 1 = /dev/dpti1 Second DPT I2O adapter
2343 152 char EtherDrive Control Device
2344 0 = /dev/etherd/ctl Connect/Disconnect an EtherDrive
2345 1 = /dev/etherd/err Monitor errors
2346 2 = /dev/etherd/raw Raw AoE packet monitor
2348 152 block EtherDrive Block Devices
2349 0 = /dev/etherd/0 EtherDrive 0
2351 255 = /dev/etherd/255 EtherDrive 255
2353 153 char SPI Bus Interface (sometimes referred to as MicroWire)
2354 0 = /dev/spi0 First SPI device on the bus
2355 1 = /dev/spi1 Second SPI device on the bus
2357 15 = /dev/spi15 Sixteenth SPI device on the bus
2359 153 block Enhanced Metadisk RAID (EMD) storage units
2360 0 = /dev/emd/0 First unit
2361 1 = /dev/emd/0p1 Partition 1 on First unit
2362 2 = /dev/emd/0p2 Partition 2 on First unit
2364 15 = /dev/emd/0p15 Partition 15 on First unit
2366 16 = /dev/emd/1 Second unit
2367 32 = /dev/emd/2 Third unit
2369 240 = /dev/emd/15 Sixteenth unit
2371 Partitions are handled in the same way as for IDE
2372 disks (see major number 3) except that the limit on
2375 154 char Specialix RIO serial card
2376 0 = /dev/ttySR0 First RIO port
2378 255 = /dev/ttySR255 256th RIO port
2380 155 char Specialix RIO serial card - alternate devices
2381 0 = /dev/cusr0 Callout device for ttySR0
2383 255 = /dev/cusr255 Callout device for ttySR255
2385 156 char Specialix RIO serial card
2386 0 = /dev/ttySR256 257th RIO port
2388 255 = /dev/ttySR511 512th RIO port
2390 157 char Specialix RIO serial card - alternate devices
2391 0 = /dev/cusr256 Callout device for ttySR256
2393 255 = /dev/cusr511 Callout device for ttySR511
2395 158 char Dialogic GammaLink fax driver
2396 0 = /dev/gfax0 GammaLink channel 0
2397 1 = /dev/gfax1 GammaLink channel 1
2404 160 char General Purpose Instrument Bus (GPIB)
2405 0 = /dev/gpib0 First GPIB bus
2406 1 = /dev/gpib1 Second GPIB bus
2409 160 block Carmel 8-port SATA Disks on First Controller
2410 0 = /dev/carmel/0 SATA disk 0 whole disk
2411 1 = /dev/carmel/0p1 SATA disk 0 partition 1
2413 31 = /dev/carmel/0p31 SATA disk 0 partition 31
2415 32 = /dev/carmel/1 SATA disk 1 whole disk
2416 64 = /dev/carmel/2 SATA disk 2 whole disk
2418 224 = /dev/carmel/7 SATA disk 7 whole disk
2420 Partitions are handled in the same way as for IDE
2421 disks (see major number 3) except that the limit on
2424 161 char IrCOMM devices (IrDA serial/parallel emulation)
2425 0 = /dev/ircomm0 First IrCOMM device
2426 1 = /dev/ircomm1 Second IrCOMM device
2428 16 = /dev/irlpt0 First IrLPT device
2429 17 = /dev/irlpt1 Second IrLPT device
2432 161 block Carmel 8-port SATA Disks on Second Controller
2433 0 = /dev/carmel/8 SATA disk 8 whole disk
2434 1 = /dev/carmel/8p1 SATA disk 8 partition 1
2436 31 = /dev/carmel/8p31 SATA disk 8 partition 31
2438 32 = /dev/carmel/9 SATA disk 9 whole disk
2439 64 = /dev/carmel/10 SATA disk 10 whole disk
2441 224 = /dev/carmel/15 SATA disk 15 whole disk
2443 Partitions are handled in the same way as for IDE
2444 disks (see major number 3) except that the limit on
2447 162 char Raw block device interface
2448 0 = /dev/rawctl Raw I/O control device
2449 1 = /dev/raw/raw1 First raw I/O device
2450 2 = /dev/raw/raw2 Second raw I/O device
2453 163 char UNASSIGNED (was Radio Tech BIM-XXX-RS232 radio modem - see 51)
2455 164 char Chase Research AT/PCI-Fast serial card
2456 0 = /dev/ttyCH0 AT/PCI-Fast board 0, port 0
2458 15 = /dev/ttyCH15 AT/PCI-Fast board 0, port 15
2459 16 = /dev/ttyCH16 AT/PCI-Fast board 1, port 0
2461 31 = /dev/ttyCH31 AT/PCI-Fast board 1, port 15
2462 32 = /dev/ttyCH32 AT/PCI-Fast board 2, port 0
2464 47 = /dev/ttyCH47 AT/PCI-Fast board 2, port 15
2465 48 = /dev/ttyCH48 AT/PCI-Fast board 3, port 0
2467 63 = /dev/ttyCH63 AT/PCI-Fast board 3, port 15
2469 165 char Chase Research AT/PCI-Fast serial card - alternate devices
2470 0 = /dev/cuch0 Callout device for ttyCH0
2472 63 = /dev/cuch63 Callout device for ttyCH63
2474 166 char ACM USB modems
2475 0 = /dev/ttyACM0 First ACM modem
2476 1 = /dev/ttyACM1 Second ACM modem
2479 167 char ACM USB modems - alternate devices
2480 0 = /dev/cuacm0 Callout device for ttyACM0
2481 1 = /dev/cuacm1 Callout device for ttyACM1
2484 168 char Eracom CSA7000 PCI encryption adaptor
2485 0 = /dev/ecsa0 First CSA7000
2486 1 = /dev/ecsa1 Second CSA7000
2489 169 char Eracom CSA8000 PCI encryption adaptor
2490 0 = /dev/ecsa8-0 First CSA8000
2491 1 = /dev/ecsa8-1 Second CSA8000
2494 170 char AMI MegaRAC remote access controller
2495 0 = /dev/megarac0 First MegaRAC card
2496 1 = /dev/megarac1 Second MegaRAC card
2499 171 char Reserved for IEEE 1394 (Firewire)
2501 172 char Moxa Intellio serial card
2502 0 = /dev/ttyMX0 First Moxa port
2503 1 = /dev/ttyMX1 Second Moxa port
2505 127 = /dev/ttyMX127 128th Moxa port
2506 128 = /dev/moxactl Moxa control port
2508 173 char Moxa Intellio serial card - alternate devices
2509 0 = /dev/cumx0 Callout device for ttyMX0
2510 1 = /dev/cumx1 Callout device for ttyMX1
2512 127 = /dev/cumx127 Callout device for ttyMX127
2514 174 char SmartIO serial card
2515 0 = /dev/ttySI0 First SmartIO port
2516 1 = /dev/ttySI1 Second SmartIO port
2519 175 char SmartIO serial card - alternate devices
2520 0 = /dev/cusi0 Callout device for ttySI0
2521 1 = /dev/cusi1 Callout device for ttySI1
2524 176 char nCipher nFast PCI crypto accelerator
2525 0 = /dev/nfastpci0 First nFast PCI device
2526 1 = /dev/nfastpci1 First nFast PCI device
2529 177 char TI PCILynx memory spaces
2530 0 = /dev/pcilynx/aux0 AUX space of first PCILynx card
2532 15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
2533 16 = /dev/pcilynx/rom0 ROM space of first PCILynx card
2535 31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
2536 32 = /dev/pcilynx/ram0 RAM space of first PCILynx card
2538 47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
2540 178 char Giganet cLAN1xxx virtual interface adapter
2541 0 = /dev/clanvi0 First cLAN adapter
2542 1 = /dev/clanvi1 Second cLAN adapter
2545 179 char CCube DVXChip-based PCI products
2546 0 = /dev/dvxirq0 First DVX device
2547 1 = /dev/dvxirq1 Second DVX device
2550 180 char USB devices
2551 0 = /dev/usb/lp0 First USB printer
2553 15 = /dev/usb/lp15 16th USB printer
2554 48 = /dev/usb/scanner0 First USB scanner
2556 63 = /dev/usb/scanner15 16th USB scanner
2557 64 = /dev/usb/rio500 Diamond Rio 500
2558 65 = /dev/usb/usblcd USBLCD Interface (info@usblcd.de)
2559 66 = /dev/usb/cpad0 Synaptics cPad (mouse/LCD)
2560 96 = /dev/usb/hiddev0 1st USB HID device
2562 111 = /dev/usb/hiddev15 16th USB HID device
2563 128 = /dev/usb/brlvgr0 First Braille Voyager device
2565 131 = /dev/usb/brlvgr3 Fourth Braille Voyager device
2566 132 = /dev/usb/idmouse ID Mouse (fingerprint scanner) device
2567 133 = /dev/usb/sisusbvga1 First SiSUSB VGA device
2569 140 = /dev/usb/sisusbvga8 Eighth SISUSB VGA device
2570 144 = /dev/usb/lcd USB LCD device
2571 160 = /dev/usb/legousbtower0 1st USB Legotower device
2573 175 = /dev/usb/legousbtower15 16th USB Legotower device
2574 176 = /dev/usb/usbtmc1 First USB TMC device
2576 192 = /dev/usb/usbtmc16 16th USB TMC device
2577 240 = /dev/usb/dabusb0 First daubusb device
2579 243 = /dev/usb/dabusb3 Fourth dabusb device
2581 180 block USB block devices
2582 0 = /dev/uba First USB block device
2583 8 = /dev/ubb Second USB block device
2584 16 = /dev/ubc Third USB block device
2587 181 char Conrad Electronic parallel port radio clocks
2588 0 = /dev/pcfclock0 First Conrad radio clock
2589 1 = /dev/pcfclock1 Second Conrad radio clock
2592 182 char Picture Elements THR2 binarizer
2593 0 = /dev/pethr0 First THR2 board
2594 1 = /dev/pethr1 Second THR2 board
2597 183 char SST 5136-DN DeviceNet interface
2598 0 = /dev/ss5136dn0 First DeviceNet interface
2599 1 = /dev/ss5136dn1 Second DeviceNet interface
2602 This device used to be assigned to major number 144.
2603 It had to be moved due to an unfortunate conflict.
2605 184 char Picture Elements' video simulator/sender
2606 0 = /dev/pevss0 First sender board
2607 1 = /dev/pevss1 Second sender board
2610 185 char InterMezzo high availability file system
2611 0 = /dev/intermezzo0 First cache manager
2612 1 = /dev/intermezzo1 Second cache manager
2615 See http://www.inter-mezzo.org/ for more information.
2617 186 char Object-based storage control device
2618 0 = /dev/obd0 First obd control device
2619 1 = /dev/obd1 Second obd control device
2622 See ftp://ftp.lustre.org/pub/obd for code and information.
2624 187 char DESkey hardware encryption device
2625 0 = /dev/deskey0 First DES key
2626 1 = /dev/deskey1 Second DES key
2629 188 char USB serial converters
2630 0 = /dev/ttyUSB0 First USB serial converter
2631 1 = /dev/ttyUSB1 Second USB serial converter
2634 189 char USB serial converters - alternate devices
2635 0 = /dev/cuusb0 Callout device for ttyUSB0
2636 1 = /dev/cuusb1 Callout device for ttyUSB1
2639 190 char Kansas City tracker/tuner card
2640 0 = /dev/kctt0 First KCT/T card
2641 1 = /dev/kctt1 Second KCT/T card
2644 191 char Reserved for PCMCIA
2646 192 char Kernel profiling interface
2647 0 = /dev/profile Profiling control device
2648 1 = /dev/profile0 Profiling device for CPU 0
2649 2 = /dev/profile1 Profiling device for CPU 1
2652 193 char Kernel event-tracing interface
2653 0 = /dev/trace Tracing control device
2654 1 = /dev/trace0 Tracing device for CPU 0
2655 2 = /dev/trace1 Tracing device for CPU 1
2658 194 char linVideoStreams (LINVS)
2659 0 = /dev/mvideo/status0 Video compression status
2660 1 = /dev/mvideo/stream0 Video stream
2661 2 = /dev/mvideo/frame0 Single compressed frame
2662 3 = /dev/mvideo/rawframe0 Raw uncompressed frame
2663 4 = /dev/mvideo/codec0 Direct codec access
2664 5 = /dev/mvideo/video4linux0 Video4Linux compatibility
2666 16 = /dev/mvideo/status1 Second device
2668 32 = /dev/mvideo/status2 Third device
2671 240 = /dev/mvideo/status15 16th device
2674 195 char Nvidia graphics devices
2675 0 = /dev/nvidia0 First Nvidia card
2676 1 = /dev/nvidia1 Second Nvidia card
2678 255 = /dev/nvidiactl Nvidia card control device
2680 196 char Tormenta T1 card
2681 0 = /dev/tor/0 Master control channel for all cards
2682 1 = /dev/tor/1 First DS0
2683 2 = /dev/tor/2 Second DS0
2685 48 = /dev/tor/48 48th DS0
2686 49 = /dev/tor/49 First pseudo-channel
2687 50 = /dev/tor/50 Second pseudo-channel
2690 197 char OpenTNF tracing facility
2691 0 = /dev/tnf/t0 Trace 0 data extraction
2692 1 = /dev/tnf/t1 Trace 1 data extraction
2694 128 = /dev/tnf/status Tracing facility status
2695 130 = /dev/tnf/trace Tracing device
2697 198 char Total Impact TPMP2 quad coprocessor PCI card
2698 0 = /dev/tpmp2/0 First card
2699 1 = /dev/tpmp2/1 Second card
2702 199 char Veritas volume manager (VxVM) volumes
2703 0 = /dev/vx/rdsk/*/* First volume
2704 1 = /dev/vx/rdsk/*/* Second volume
2707 199 block Veritas volume manager (VxVM) volumes
2708 0 = /dev/vx/dsk/*/* First volume
2709 1 = /dev/vx/dsk/*/* Second volume
2712 The namespace in these directories is maintained by
2713 the user space VxVM software.
2715 200 char Veritas VxVM configuration interface
2716 0 = /dev/vx/config Configuration access node
2717 1 = /dev/vx/trace Volume i/o trace access node
2718 2 = /dev/vx/iod Volume i/o daemon access node
2719 3 = /dev/vx/info Volume information access node
2720 4 = /dev/vx/task Volume tasks access node
2721 5 = /dev/vx/taskmon Volume tasks monitor daemon
2723 201 char Veritas VxVM dynamic multipathing driver
2724 0 = /dev/vx/rdmp/* First multipath device
2725 1 = /dev/vx/rdmp/* Second multipath device
2727 201 block Veritas VxVM dynamic multipathing driver
2728 0 = /dev/vx/dmp/* First multipath device
2729 1 = /dev/vx/dmp/* Second multipath device
2732 The namespace in these directories is maintained by
2733 the user space VxVM software.
2735 202 char CPU model-specific registers
2736 0 = /dev/cpu/0/msr MSRs on CPU 0
2737 1 = /dev/cpu/1/msr MSRs on CPU 1
2740 202 block Xen Virtual Block Device
2741 0 = /dev/xvda First Xen VBD whole disk
2742 16 = /dev/xvdb Second Xen VBD whole disk
2743 32 = /dev/xvdc Third Xen VBD whole disk
2745 240 = /dev/xvdp Sixteenth Xen VBD whole disk
2747 Partitions are handled in the same way as for IDE
2748 disks (see major number 3) except that the limit on
2751 203 char CPU CPUID information
2752 0 = /dev/cpu/0/cpuid CPUID on CPU 0
2753 1 = /dev/cpu/1/cpuid CPUID on CPU 1
2756 204 char Low-density serial ports
2757 0 = /dev/ttyLU0 LinkUp Systems L72xx UART - port 0
2758 1 = /dev/ttyLU1 LinkUp Systems L72xx UART - port 1
2759 2 = /dev/ttyLU2 LinkUp Systems L72xx UART - port 2
2760 3 = /dev/ttyLU3 LinkUp Systems L72xx UART - port 3
2761 4 = /dev/ttyFB0 Intel Footbridge (ARM)
2762 5 = /dev/ttySA0 StrongARM builtin serial port 0
2763 6 = /dev/ttySA1 StrongARM builtin serial port 1
2764 7 = /dev/ttySA2 StrongARM builtin serial port 2
2765 8 = /dev/ttySC0 SCI serial port (SuperH) - port 0
2766 9 = /dev/ttySC1 SCI serial port (SuperH) - port 1
2767 10 = /dev/ttySC2 SCI serial port (SuperH) - port 2
2768 11 = /dev/ttySC3 SCI serial port (SuperH) - port 3
2769 12 = /dev/ttyFW0 Firmware console - port 0
2770 13 = /dev/ttyFW1 Firmware console - port 1
2771 14 = /dev/ttyFW2 Firmware console - port 2
2772 15 = /dev/ttyFW3 Firmware console - port 3
2773 16 = /dev/ttyAM0 ARM "AMBA" serial port 0
2775 31 = /dev/ttyAM15 ARM "AMBA" serial port 15
2776 32 = /dev/ttyDB0 DataBooster serial port 0
2778 39 = /dev/ttyDB7 DataBooster serial port 7
2779 40 = /dev/ttySG0 SGI Altix console port
2780 41 = /dev/ttySMX0 Motorola i.MX - port 0
2781 42 = /dev/ttySMX1 Motorola i.MX - port 1
2782 43 = /dev/ttySMX2 Motorola i.MX - port 2
2783 44 = /dev/ttyMM0 Marvell MPSC - port 0
2784 45 = /dev/ttyMM1 Marvell MPSC - port 1
2785 46 = /dev/ttyCPM0 PPC CPM (SCC or SMC) - port 0
2787 47 = /dev/ttyCPM5 PPC CPM (SCC or SMC) - port 5
2788 50 = /dev/ttyIOC0 Altix serial card
2790 81 = /dev/ttyIOC31 Altix serial card
2791 82 = /dev/ttyVR0 NEC VR4100 series SIU
2792 83 = /dev/ttyVR1 NEC VR4100 series DSIU
2793 84 = /dev/ttyIOC84 Altix ioc4 serial card
2795 115 = /dev/ttyIOC115 Altix ioc4 serial card
2796 116 = /dev/ttySIOC0 Altix ioc3 serial card
2798 147 = /dev/ttySIOC31 Altix ioc3 serial card
2799 148 = /dev/ttyPSC0 PPC PSC - port 0
2801 153 = /dev/ttyPSC5 PPC PSC - port 5
2802 154 = /dev/ttyAT0 ATMEL serial port 0
2804 169 = /dev/ttyAT15 ATMEL serial port 15
2805 170 = /dev/ttyNX0 Hilscher netX serial port 0
2807 185 = /dev/ttyNX15 Hilscher netX serial port 15
2808 186 = /dev/ttyJ0 JTAG1 DCC protocol based serial port emulation
2809 187 = /dev/ttyUL0 Xilinx uartlite - port 0
2811 190 = /dev/ttyUL3 Xilinx uartlite - port 3
2812 191 = /dev/xvc0 Xen virtual console - port 0
2814 205 char Low-density serial ports (alternate device)
2815 0 = /dev/culu0 Callout device for ttyLU0
2816 1 = /dev/culu1 Callout device for ttyLU1
2817 2 = /dev/culu2 Callout device for ttyLU2
2818 3 = /dev/culu3 Callout device for ttyLU3
2819 4 = /dev/cufb0 Callout device for ttyFB0
2820 5 = /dev/cusa0 Callout device for ttySA0
2821 6 = /dev/cusa1 Callout device for ttySA1
2822 7 = /dev/cusa2 Callout device for ttySA2
2823 8 = /dev/cusc0 Callout device for ttySC0
2824 9 = /dev/cusc1 Callout device for ttySC1
2825 10 = /dev/cusc2 Callout device for ttySC2
2826 11 = /dev/cusc3 Callout device for ttySC3
2827 12 = /dev/cufw0 Callout device for ttyFW0
2828 13 = /dev/cufw1 Callout device for ttyFW1
2829 14 = /dev/cufw2 Callout device for ttyFW2
2830 15 = /dev/cufw3 Callout device for ttyFW3
2831 16 = /dev/cuam0 Callout device for ttyAM0
2833 31 = /dev/cuam15 Callout device for ttyAM15
2834 32 = /dev/cudb0 Callout device for ttyDB0
2836 39 = /dev/cudb7 Callout device for ttyDB7
2837 40 = /dev/cusg0 Callout device for ttySG0
2838 41 = /dev/ttycusmx0 Callout device for ttySMX0
2839 42 = /dev/ttycusmx1 Callout device for ttySMX1
2840 43 = /dev/ttycusmx2 Callout device for ttySMX2
2841 46 = /dev/cucpm0 Callout device for ttyCPM0
2843 49 = /dev/cucpm5 Callout device for ttyCPM5
2844 50 = /dev/cuioc40 Callout device for ttyIOC40
2846 81 = /dev/cuioc431 Callout device for ttyIOC431
2847 82 = /dev/cuvr0 Callout device for ttyVR0
2848 83 = /dev/cuvr1 Callout device for ttyVR1
2850 206 char OnStream SC-x0 tape devices
2851 0 = /dev/osst0 First OnStream SCSI tape, mode 0
2852 1 = /dev/osst1 Second OnStream SCSI tape, mode 0
2854 32 = /dev/osst0l First OnStream SCSI tape, mode 1
2855 33 = /dev/osst1l Second OnStream SCSI tape, mode 1
2857 64 = /dev/osst0m First OnStream SCSI tape, mode 2
2858 65 = /dev/osst1m Second OnStream SCSI tape, mode 2
2860 96 = /dev/osst0a First OnStream SCSI tape, mode 3
2861 97 = /dev/osst1a Second OnStream SCSI tape, mode 3
2863 128 = /dev/nosst0 No rewind version of /dev/osst0
2864 129 = /dev/nosst1 No rewind version of /dev/osst1
2866 160 = /dev/nosst0l No rewind version of /dev/osst0l
2867 161 = /dev/nosst1l No rewind version of /dev/osst1l
2869 192 = /dev/nosst0m No rewind version of /dev/osst0m
2870 193 = /dev/nosst1m No rewind version of /dev/osst1m
2872 224 = /dev/nosst0a No rewind version of /dev/osst0a
2873 225 = /dev/nosst1a No rewind version of /dev/osst1a
2876 The OnStream SC-x0 SCSI tapes do not support the
2877 standard SCSI SASD command set and therefore need
2878 their own driver "osst". Note that the IDE, USB (and
2879 maybe ParPort) versions may be driven via ide-scsi or
2880 usb-storage SCSI emulation and this osst device and
2881 driver as well. The ADR-x0 drives are QIC-157
2882 compliant and don't need osst.
2884 207 char Compaq ProLiant health feature indicate
2885 0 = /dev/cpqhealth/cpqw Redirector interface
2886 1 = /dev/cpqhealth/crom EISA CROM
2887 2 = /dev/cpqhealth/cdt Data Table
2888 3 = /dev/cpqhealth/cevt Event Log
2889 4 = /dev/cpqhealth/casr Automatic Server Recovery
2890 5 = /dev/cpqhealth/cecc ECC Memory
2891 6 = /dev/cpqhealth/cmca Machine Check Architecture
2892 7 = /dev/cpqhealth/ccsm Deprecated CDT
2893 8 = /dev/cpqhealth/cnmi NMI Handling
2894 9 = /dev/cpqhealth/css Sideshow Management
2895 10 = /dev/cpqhealth/cram CMOS interface
2896 11 = /dev/cpqhealth/cpci PCI IRQ interface
2898 208 char User space serial ports
2899 0 = /dev/ttyU0 First user space serial port
2900 1 = /dev/ttyU1 Second user space serial port
2903 209 char User space serial ports (alternate devices)
2904 0 = /dev/cuu0 Callout device for ttyU0
2905 1 = /dev/cuu1 Callout device for ttyU1
2908 210 char SBE, Inc. sync/async serial card
2909 0 = /dev/sbei/wxcfg0 Configuration device for board 0
2910 1 = /dev/sbei/dld0 Download device for board 0
2911 2 = /dev/sbei/wan00 WAN device, port 0, board 0
2912 3 = /dev/sbei/wan01 WAN device, port 1, board 0
2913 4 = /dev/sbei/wan02 WAN device, port 2, board 0
2914 5 = /dev/sbei/wan03 WAN device, port 3, board 0
2915 6 = /dev/sbei/wanc00 WAN clone device, port 0, board 0
2916 7 = /dev/sbei/wanc01 WAN clone device, port 1, board 0
2917 8 = /dev/sbei/wanc02 WAN clone device, port 2, board 0
2918 9 = /dev/sbei/wanc03 WAN clone device, port 3, board 0
2919 10 = /dev/sbei/wxcfg1 Configuration device for board 1
2920 11 = /dev/sbei/dld1 Download device for board 1
2921 12 = /dev/sbei/wan10 WAN device, port 0, board 1
2922 13 = /dev/sbei/wan11 WAN device, port 1, board 1
2923 14 = /dev/sbei/wan12 WAN device, port 2, board 1
2924 15 = /dev/sbei/wan13 WAN device, port 3, board 1
2925 16 = /dev/sbei/wanc10 WAN clone device, port 0, board 1
2926 17 = /dev/sbei/wanc11 WAN clone device, port 1, board 1
2927 18 = /dev/sbei/wanc12 WAN clone device, port 2, board 1
2928 19 = /dev/sbei/wanc13 WAN clone device, port 3, board 1
2931 Yes, each board is really spaced 10 (decimal) apart.
2933 211 char Addinum CPCI1500 digital I/O card
2934 0 = /dev/addinum/cpci1500/0 First CPCI1500 card
2935 1 = /dev/addinum/cpci1500/1 Second CPCI1500 card
2938 212 char LinuxTV.org DVB driver subsystem
2939 0 = /dev/dvb/adapter0/video0 first video decoder of first card
2940 1 = /dev/dvb/adapter0/audio0 first audio decoder of first card
2941 2 = /dev/dvb/adapter0/sec0 (obsolete/unused)
2942 3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
2943 4 = /dev/dvb/adapter0/demux0 first demux device of first card
2944 5 = /dev/dvb/adapter0/dvr0 first digital video recoder device of first card
2945 6 = /dev/dvb/adapter0/ca0 first common access port of first card
2946 7 = /dev/dvb/adapter0/net0 first network device of first card
2947 8 = /dev/dvb/adapter0/osd0 first on-screen-display device of first card
2948 9 = /dev/dvb/adapter0/video1 second video decoder of first card
2950 64 = /dev/dvb/adapter1/video0 first video decoder of second card
2952 128 = /dev/dvb/adapter2/video0 first video decoder of third card
2954 196 = /dev/dvb/adapter3/video0 first video decoder of fourth card
2956 216 char Bluetooth RFCOMM TTY devices
2957 0 = /dev/rfcomm0 First Bluetooth RFCOMM TTY device
2958 1 = /dev/rfcomm1 Second Bluetooth RFCOMM TTY device
2961 217 char Bluetooth RFCOMM TTY devices (alternate devices)
2962 0 = /dev/curf0 Callout device for rfcomm0
2963 1 = /dev/curf1 Callout device for rfcomm1
2966 218 char The Logical Company bus Unibus/Qbus adapters
2967 0 = /dev/logicalco/bci/0 First bus adapter
2968 1 = /dev/logicalco/bci/1 First bus adapter
2971 219 char The Logical Company DCI-1300 digital I/O card
2972 0 = /dev/logicalco/dci1300/0 First DCI-1300 card
2973 1 = /dev/logicalco/dci1300/1 Second DCI-1300 card
2976 220 char Myricom Myrinet "GM" board
2977 0 = /dev/myricom/gm0 First Myrinet GM board
2978 1 = /dev/myricom/gmp0 First board "root access"
2979 2 = /dev/myricom/gm1 Second Myrinet GM board
2980 3 = /dev/myricom/gmp1 Second board "root access"
2984 0 = /dev/bus/vme/m0 First master image
2985 1 = /dev/bus/vme/m1 Second master image
2986 2 = /dev/bus/vme/m2 Third master image
2987 3 = /dev/bus/vme/m3 Fourth master image
2988 4 = /dev/bus/vme/s0 First slave image
2989 5 = /dev/bus/vme/s1 Second slave image
2990 6 = /dev/bus/vme/s2 Third slave image
2991 7 = /dev/bus/vme/s3 Fourth slave image
2992 8 = /dev/bus/vme/ctl Control
2994 It is expected that all VME bus drivers will use the
2995 same interface. For interface documentation see
2996 http://www.vmelinux.org/.
2998 224 char A2232 serial card
2999 0 = /dev/ttyY0 First A2232 port
3000 1 = /dev/ttyY1 Second A2232 port
3003 225 char A2232 serial card (alternate devices)
3004 0 = /dev/cuy0 Callout device for ttyY0
3005 1 = /dev/cuy1 Callout device for ttyY1
3008 226 char Direct Rendering Infrastructure (DRI)
3009 0 = /dev/dri/card0 First graphics card
3010 1 = /dev/dri/card1 Second graphics card
3013 227 char IBM 3270 terminal Unix tty access
3014 1 = /dev/3270/tty1 First 3270 terminal
3015 2 = /dev/3270/tty2 Seconds 3270 terminal
3018 228 char IBM 3270 terminal block-mode access
3019 0 = /dev/3270/tub Controlling interface
3020 1 = /dev/3270/tub1 First 3270 terminal
3021 2 = /dev/3270/tub2 Second 3270 terminal
3024 229 char IBM iSeries/pSeries virtual console
3025 0 = /dev/hvc0 First console port
3026 1 = /dev/hvc1 Second console port
3029 230 char IBM iSeries virtual tape
3030 0 = /dev/iseries/vt0 First virtual tape, mode 0
3031 1 = /dev/iseries/vt1 Second virtual tape, mode 0
3033 32 = /dev/iseries/vt0l First virtual tape, mode 1
3034 33 = /dev/iseries/vt1l Second virtual tape, mode 1
3036 64 = /dev/iseries/vt0m First virtual tape, mode 2
3037 65 = /dev/iseries/vt1m Second virtual tape, mode 2
3039 96 = /dev/iseries/vt0a First virtual tape, mode 3
3040 97 = /dev/iseries/vt1a Second virtual tape, mode 3
3042 128 = /dev/iseries/nvt0 First virtual tape, mode 0, no rewind
3043 129 = /dev/iseries/nvt1 Second virtual tape, mode 0, no rewind
3045 160 = /dev/iseries/nvt0l First virtual tape, mode 1, no rewind
3046 161 = /dev/iseries/nvt1l Second virtual tape, mode 1, no rewind
3048 192 = /dev/iseries/nvt0m First virtual tape, mode 2, no rewind
3049 193 = /dev/iseries/nvt1m Second virtual tape, mode 2, no rewind
3051 224 = /dev/iseries/nvt0a First virtual tape, mode 3, no rewind
3052 225 = /dev/iseries/nvt1a Second virtual tape, mode 3, no rewind
3055 "No rewind" refers to the omission of the default
3056 automatic rewind on device close. The MTREW or MTOFFL
3057 ioctl()'s can be used to rewind the tape regardless of
3058 the device used to access it.
3061 0 = /dev/infiniband/umad0
3062 1 = /dev/infiniband/umad1
3064 63 = /dev/infiniband/umad63 63rd InfiniBandMad device
3065 64 = /dev/infiniband/issm0 First InfiniBand IsSM device
3066 65 = /dev/infiniband/issm1 Second InfiniBand IsSM device
3068 127 = /dev/infiniband/issm63 63rd InfiniBand IsSM device
3069 128 = /dev/infiniband/uverbs0 First InfiniBand verbs device
3070 129 = /dev/infiniband/uverbs1 Second InfiniBand verbs device
3072 159 = /dev/infiniband/uverbs31 31st InfiniBand verbs device
3074 232 char Biometric Devices
3075 0 = /dev/biometric/sensor0/fingerprint first fingerprint sensor on first device
3076 1 = /dev/biometric/sensor0/iris first iris sensor on first device
3077 2 = /dev/biometric/sensor0/retina first retina sensor on first device
3078 3 = /dev/biometric/sensor0/voiceprint first voiceprint sensor on first device
3079 4 = /dev/biometric/sensor0/facial first facial sensor on first device
3080 5 = /dev/biometric/sensor0/hand first hand sensor on first device
3082 10 = /dev/biometric/sensor1/fingerprint first fingerprint sensor on second device
3084 20 = /dev/biometric/sensor2/fingerprint first fingerprint sensor on third device
3087 233 char PathScale InfiniPath interconnect
3088 0 = /dev/ipath Primary device for programs (any unit)
3089 1 = /dev/ipath0 Access specifically to unit 0
3090 2 = /dev/ipath1 Access specifically to unit 1
3092 4 = /dev/ipath3 Access specifically to unit 3
3093 129 = /dev/ipath_sma Device used by Subnet Management Agent
3094 130 = /dev/ipath_diag Device used by diagnostics programs
3098 240-254 char LOCAL/EXPERIMENTAL USE
3100 240-254 block LOCAL/EXPERIMENTAL USE
3101 Allocated for local/experimental use. For devices not
3102 assigned official numbers, these ranges should be
3103 used in order to avoid conflicting with future assignments.
3109 This major is reserved to assist the expansion to a
3110 larger number space. No device nodes with this major
3111 should ever be created on the filesystem.
3112 (This is probably not true anymore, but I'll leave it
3115 ---LARGE MAJORS!!!!!---
3117 256 char Equinox SST multi-port serial boards
3118 0 = /dev/ttyEQ0 First serial port on first Equinox SST board
3119 127 = /dev/ttyEQ127 Last serial port on first Equinox SST board
3120 128 = /dev/ttyEQ128 First serial port on second Equinox SST board
3122 1027 = /dev/ttyEQ1027 Last serial port on eighth Equinox SST board
3124 256 block Resident Flash Disk Flash Translation Layer
3125 0 = /dev/rfda First RFD FTL layer
3126 16 = /dev/rfdb Second RFD FTL layer
3128 240 = /dev/rfdp 16th RFD FTL layer
3130 257 char Phoenix Technologies Cryptographic Services Driver
3131 0 = /dev/ptlsec Crypto Services Driver
3133 257 block SSFDC Flash Translation Layer filesystem
3134 0 = /dev/ssfdca First SSFDC layer
3135 8 = /dev/ssfdcb Second SSFDC layer
3136 16 = /dev/ssfdcc Third SSFDC layer
3137 24 = /dev/ssfdcd 4th SSFDC layer
3138 32 = /dev/ssfdce 5th SSFDC layer
3139 40 = /dev/ssfdcf 6th SSFDC layer
3140 48 = /dev/ssfdcg 7th SSFDC layer
3141 56 = /dev/ssfdch 8th SSFDC layer
3143 258 block ROM/Flash read-only translation layer
3144 0 = /dev/blockrom0 First ROM card's translation layer interface
3145 1 = /dev/blockrom1 Second ROM card's translation layer interface
3148 **** ADDITIONAL /dev DIRECTORY ENTRIES
3150 This section details additional entries that should or may exist in
3151 the /dev directory. It is preferred that symbolic links use the same
3152 form (absolute or relative) as is indicated here. Links are
3153 classified as "hard" or "symbolic" depending on the preferred type of
3154 link; if possible, the indicated type of link should be used.
3159 These links should exist on all systems:
3161 /dev/fd /proc/self/fd symbolic File descriptors
3162 /dev/stdin fd/0 symbolic stdin file descriptor
3163 /dev/stdout fd/1 symbolic stdout file descriptor
3164 /dev/stderr fd/2 symbolic stderr file descriptor
3165 /dev/nfsd socksys symbolic Required by iBCS-2
3166 /dev/X0R null symbolic Required by iBCS-2
3168 Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
3172 It is recommended that these links exist on all systems:
3174 /dev/core /proc/kcore symbolic Backward compatibility
3175 /dev/ramdisk ram0 symbolic Backward compatibility
3176 /dev/ftape qft0 symbolic Backward compatibility
3177 /dev/bttv0 video0 symbolic Backward compatibility
3178 /dev/radio radio0 symbolic Backward compatibility
3179 /dev/i2o* /dev/i2o/* symbolic Backward compatibility
3180 /dev/scd? sr? hard Alternate SCSI CD-ROM name
3182 Locally defined links
3184 The following links may be established locally to conform to the
3185 configuration of the system. This is merely a tabulation of existing
3186 practice, and does not constitute a recommendation. However, if they
3187 exist, they should have the following uses.
3189 /dev/mouse mouse port symbolic Current mouse device
3190 /dev/tape tape device symbolic Current tape device
3191 /dev/cdrom CD-ROM device symbolic Current CD-ROM device
3192 /dev/cdwriter CD-writer symbolic Current CD-writer device
3193 /dev/scanner scanner symbolic Current scanner device
3194 /dev/modem modem port symbolic Current dialout device
3195 /dev/root root device symbolic Current root filesystem
3196 /dev/swap swap device symbolic Current swap device
3198 /dev/modem should not be used for a modem which supports dialin as
3199 well as dialout, as it tends to cause lock file problems. If it
3200 exists, /dev/modem should point to the appropriate primary TTY device
3201 (the use of the alternate callout devices is deprecated).
3203 For SCSI devices, /dev/tape and /dev/cdrom should point to the
3204 ``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
3205 /dev/cdwriter and /dev/scanner should point to the appropriate generic
3206 SCSI devices (/dev/sg*).
3208 /dev/mouse may point to a primary serial TTY device, a hardware mouse
3209 device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
3213 Non-transient sockets and named pipes may exist in /dev. Common entries are:
3215 /dev/printer socket lpd local socket
3216 /dev/log socket syslog local socket
3217 /dev/gpmdata socket gpm mouse multiplexer
3221 The following names are reserved for mounting special filesystems
3222 under /dev. These special filesystems provide kernel interfaces that
3223 cannot be provided with standard device nodes.
3225 /dev/pts devpts PTY slave filesystem
3226 /dev/shm tmpfs POSIX shared memory maintenance access
3228 **** TERMINAL DEVICES
3230 Terminal, or TTY devices are a special class of character devices. A
3231 terminal device is any device that could act as a controlling terminal
3232 for a session; this includes virtual consoles, serial ports, and
3233 pseudoterminals (PTYs).
3235 All terminal devices share a common set of capabilities known as line
3236 disciplines; these include the common terminal line discipline as well
3237 as SLIP and PPP modes.
3239 All terminal devices are named similarly; this section explains the
3240 naming and use of the various types of TTYs. Note that the naming
3241 conventions include several historical warts; some of these are
3242 Linux-specific, some were inherited from other systems, and some
3243 reflect Linux outgrowing a borrowed convention.
3245 A hash mark (#) in a device name is used here to indicate a decimal
3246 number without leading zeroes.
3248 Virtual consoles and the console device
3250 Virtual consoles are full-screen terminal displays on the system video
3251 monitor. Virtual consoles are named /dev/tty#, with numbering
3252 starting at /dev/tty1; /dev/tty0 is the current virtual console.
3253 /dev/tty0 is the device that should be used to access the system video
3254 card on those architectures for which the frame buffer devices
3255 (/dev/fb*) are not applicable. Do not use /dev/console
3258 The console device, /dev/console, is the device to which system
3259 messages should be sent, and on which logins should be permitted in
3260 single-user mode. Starting with Linux 2.1.71, /dev/console is managed
3261 by the kernel; for previous versions it should be a symbolic link to
3262 either /dev/tty0, a specific virtual console such as /dev/tty1, or to
3263 a serial port primary (tty*, not cu*) device, depending on the
3264 configuration of the system.
3268 Serial ports are RS-232 serial ports and any device which simulates
3269 one, either in hardware (such as internal modems) or in software (such
3270 as the ISDN driver.) Under Linux, each serial ports has two device
3271 names, the primary or callin device and the alternate or callout one.
3272 Each kind of device is indicated by a different letter. For any
3273 letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
3274 respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
3275 correspond to /dev/cua# and /dev/cub#. In the future, it should be
3276 expected that multiple letters will be used; all letters will be upper
3277 case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
3278 "cu" device (e.g. /dev/cudp#).
3280 The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
3282 The alternate devices provide for kernel-based exclusion and somewhat
3283 different defaults than the primary devices. Their main purpose is to
3284 allow the use of serial ports with programs with no inherent or broken
3285 support for serial ports. Their use is deprecated, and they may be
3286 removed from a future version of Linux.
3288 Arbitration of serial ports is provided by the use of lock files with
3289 the names /var/lock/LCK..ttyX#. The contents of the lock file should
3290 be the PID of the locking process as an ASCII number.
3292 It is common practice to install links such as /dev/modem
3293 which point to serial ports. In order to ensure proper locking in the
3294 presence of these links, it is recommended that software chase
3295 symlinks and lock all possible names; additionally, it is recommended
3296 that a lock file be installed with the corresponding alternate
3297 device. In order to avoid deadlocks, it is recommended that the locks
3298 are acquired in the following order, and released in the reverse:
3300 1. The symbolic link name, if any (/var/lock/LCK..modem)
3301 2. The "tty" name (/var/lock/LCK..ttyS2)
3302 3. The alternate device name (/var/lock/LCK..cua2)
3304 In the case of nested symbolic links, the lock files should be
3305 installed in the order the symlinks are resolved.
3307 Under no circumstances should an application hold a lock while waiting
3308 for another to be released. In addition, applications which attempt
3309 to create lock files for the corresponding alternate device names
3310 should take into account the possibility of being used on a non-serial
3311 port TTY, for which no alternate device would exist.
3313 Pseudoterminals (PTYs)
3315 Pseudoterminals, or PTYs, are used to create login sessions or provide
3316 other capabilities requiring a TTY line discipline (including SLIP or
3317 PPP capability) to arbitrary data-generation processes. Each PTY has
3318 a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
3319 /dev/tty[p-za-e][0-9a-f]. The kernel arbitrates the use of PTYs by
3320 allowing each master side to be opened only once.
3322 Once the master side has been opened, the corresponding slave device
3323 can be used in the same manner as any TTY device. The master and
3324 slave devices are connected by the kernel, generating the equivalent
3325 of a bidirectional pipe with TTY capabilities.
3327 Recent versions of the Linux kernels and GNU libc contain support for
3328 the System V/Unix98 naming scheme for PTYs, which assigns a common
3329 device, /dev/ptmx, to all the masters (opening it will automatically
3330 give you a previously unassigned PTY) and a subdirectory, /dev/pts,
3331 for the slaves; the slaves are named with decimal integers (/dev/pts/#
3332 in our notation). This removes the problem of exhausting the
3333 namespace and enables the kernel to automatically create the device
3334 nodes for the slaves on demand using the "devpts" filesystem.
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