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2 LINUX ALLOCATED DEVICES (2.6+ version)
4 Maintained by Alan Cox <device@lanana.org>
6 Last revised: 6th April 2009
8 This list is the Linux Device List, the official registry of allocated
9 device numbers and /dev directory nodes for the Linux operating
10 system.
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17 The LaTeX version of this document is no longer maintained.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26 The symbol {2.6} means the allocation is obsolete and scheduled for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
40 reply.
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 Fourth, remember that Linux now has extensive support for dynamic allocation
71 of device numbering and can use sysfs and udev to handle the naming needs.
72 There are still some exceptions in the serial and boot device area. Before
73 asking for a device number make sure you actually need one.
75 Finally, sometimes I have to play "namespace police." Please don't be
76 offended. I often get submissions for /dev names that would be bound
77 to cause conflicts down the road. I am trying to avoid getting in a
78 situation where we would have to suffer an incompatible forward
79 change. Therefore, please consult with me *before* you make your
80 device names and numbers in any way public, at least to the point
81 where it would be at all difficult to get them changed.
83 Your cooperation is appreciated.
86 0 Unnamed devices (e.g. non-device mounts)
87 0 = reserved as null device number
88 See block major 144, 145, 146 for expansion areas.
90 1 char Memory devices
91 1 = /dev/mem Physical memory access
92 2 = /dev/kmem Kernel virtual memory access
93 3 = /dev/null Null device
94 4 = /dev/port I/O port access
95 5 = /dev/zero Null byte source
96 6 = /dev/core OBSOLETE - replaced by /proc/kcore
97 7 = /dev/full Returns ENOSPC on write
98 8 = /dev/random Nondeterministic random number gen.
99 9 = /dev/urandom Faster, less secure random number gen.
100 10 = /dev/aio Asynchronous I/O notification interface
101 11 = /dev/kmsg Writes to this come out as printk's, reads
102 export the buffered printk records.
103 12 = /dev/oldmem Used by crashdump kernels to access
104 the memory of the kernel that crashed.
106 1 block RAM disk
107 0 = /dev/ram0 First RAM disk
108 1 = /dev/ram1 Second RAM disk
109 ...
110 250 = /dev/initrd Initial RAM disk
112 Older kernels had /dev/ramdisk (1, 1) here.
113 /dev/initrd refers to a RAM disk which was preloaded
114 by the boot loader; newer kernels use /dev/ram0 for
115 the initrd.
117 2 char Pseudo-TTY masters
118 0 = /dev/ptyp0 First PTY master
119 1 = /dev/ptyp1 Second PTY master
120 ...
121 255 = /dev/ptyef 256th PTY master
123 Pseudo-tty's are named as follows:
124 * Masters are "pty", slaves are "tty";
125 * the fourth letter is one of pqrstuvwxyzabcde indicating
126 the 1st through 16th series of 16 pseudo-ttys each, and
127 * the fifth letter is one of 0123456789abcdef indicating
128 the position within the series.
130 These are the old-style (BSD) PTY devices; Unix98
131 devices are on major 128 and above and use the PTY
132 master multiplex (/dev/ptmx) to acquire a PTY on
133 demand.
135 2 block Floppy disks
136 0 = /dev/fd0 Controller 0, drive 0, autodetect
137 1 = /dev/fd1 Controller 0, drive 1, autodetect
138 2 = /dev/fd2 Controller 0, drive 2, autodetect
139 3 = /dev/fd3 Controller 0, drive 3, autodetect
140 128 = /dev/fd4 Controller 1, drive 0, autodetect
141 129 = /dev/fd5 Controller 1, drive 1, autodetect
142 130 = /dev/fd6 Controller 1, drive 2, autodetect
143 131 = /dev/fd7 Controller 1, drive 3, autodetect
145 To specify format, add to the autodetect device number:
146 0 = /dev/fd? Autodetect format
147 4 = /dev/fd?d360 5.25" 360K in a 360K drive(1)
148 20 = /dev/fd?h360 5.25" 360K in a 1200K drive(1)
149 48 = /dev/fd?h410 5.25" 410K in a 1200K drive
150 64 = /dev/fd?h420 5.25" 420K in a 1200K drive
151 24 = /dev/fd?h720 5.25" 720K in a 1200K drive
152 80 = /dev/fd?h880 5.25" 880K in a 1200K drive(1)
153 8 = /dev/fd?h1200 5.25" 1200K in a 1200K drive(1)
154 40 = /dev/fd?h1440 5.25" 1440K in a 1200K drive(1)
155 56 = /dev/fd?h1476 5.25" 1476K in a 1200K drive
156 72 = /dev/fd?h1494 5.25" 1494K in a 1200K drive
157 92 = /dev/fd?h1600 5.25" 1600K in a 1200K drive(1)
159 12 = /dev/fd?u360 3.5" 360K Double Density(2)
160 16 = /dev/fd?u720 3.5" 720K Double Density(1)
161 120 = /dev/fd?u800 3.5" 800K Double Density(2)
162 52 = /dev/fd?u820 3.5" 820K Double Density
163 68 = /dev/fd?u830 3.5" 830K Double Density
164 84 = /dev/fd?u1040 3.5" 1040K Double Density(1)
165 88 = /dev/fd?u1120 3.5" 1120K Double Density(1)
166 28 = /dev/fd?u1440 3.5" 1440K High Density(1)
167 124 = /dev/fd?u1600 3.5" 1600K High Density(1)
168 44 = /dev/fd?u1680 3.5" 1680K High Density(3)
169 60 = /dev/fd?u1722 3.5" 1722K High Density
170 76 = /dev/fd?u1743 3.5" 1743K High Density
171 96 = /dev/fd?u1760 3.5" 1760K High Density
172 116 = /dev/fd?u1840 3.5" 1840K High Density(3)
173 100 = /dev/fd?u1920 3.5" 1920K High Density(1)
174 32 = /dev/fd?u2880 3.5" 2880K Extra Density(1)
175 104 = /dev/fd?u3200 3.5" 3200K Extra Density
176 108 = /dev/fd?u3520 3.5" 3520K Extra Density
177 112 = /dev/fd?u3840 3.5" 3840K Extra Density(1)
179 36 = /dev/fd?CompaQ Compaq 2880K drive; obsolete?
181 (1) Autodetectable format
182 (2) Autodetectable format in a Double Density (720K) drive only
183 (3) Autodetectable format in a High Density (1440K) drive only
185 NOTE: The letter in the device name (d, q, h or u)
186 signifies the type of drive: 5.25" Double Density (d),
187 5.25" Quad Density (q), 5.25" High Density (h) or 3.5"
188 (any model, u). The use of the capital letters D, H
189 and E for the 3.5" models have been deprecated, since
190 the drive type is insignificant for these devices.
192 3 char Pseudo-TTY slaves
193 0 = /dev/ttyp0 First PTY slave
194 1 = /dev/ttyp1 Second PTY slave
195 ...
196 255 = /dev/ttyef 256th PTY slave
198 These are the old-style (BSD) PTY devices; Unix98
199 devices are on major 136 and above.
201 3 block First MFM, RLL and IDE hard disk/CD-ROM interface
202 0 = /dev/hda Master: whole disk (or CD-ROM)
203 64 = /dev/hdb Slave: whole disk (or CD-ROM)
205 For partitions, add to the whole disk device number:
206 0 = /dev/hd? Whole disk
207 1 = /dev/hd?1 First partition
208 2 = /dev/hd?2 Second partition
209 ...
210 63 = /dev/hd?63 63rd partition
212 For Linux/i386, partitions 1-4 are the primary
213 partitions, and 5 and above are logical partitions.
214 Other versions of Linux use partitioning schemes
215 appropriate to their respective architectures.
217 4 char TTY devices
218 0 = /dev/tty0 Current virtual console
220 1 = /dev/tty1 First virtual console
221 ...
222 63 = /dev/tty63 63rd virtual console
223 64 = /dev/ttyS0 First UART serial port
224 ...
225 255 = /dev/ttyS191 192nd UART serial port
227 UART serial ports refer to 8250/16450/16550 series devices.
229 Older versions of the Linux kernel used this major
230 number for BSD PTY devices. As of Linux 2.1.115, this
231 is no longer supported. Use major numbers 2 and 3.
233 4 block Aliases for dynamically allocated major devices to be used
234 when its not possible to create the real device nodes
235 because the root filesystem is mounted read-only.
237 0 = /dev/root
239 5 char Alternate TTY devices
240 0 = /dev/tty Current TTY device
241 1 = /dev/console System console
242 2 = /dev/ptmx PTY master multiplex
243 3 = /dev/ttyprintk User messages via printk TTY device
244 64 = /dev/cua0 Callout device for ttyS0
245 ...
246 255 = /dev/cua191 Callout device for ttyS191
248 (5,1) is /dev/console starting with Linux 2.1.71. See
249 the section on terminal devices for more information
250 on /dev/console.
252 6 char Parallel printer devices
253 0 = /dev/lp0 Parallel printer on parport0
254 1 = /dev/lp1 Parallel printer on parport1
255 ...
257 Current Linux kernels no longer have a fixed mapping
258 between parallel ports and I/O addresses. Instead,
259 they are redirected through the parport multiplex layer.
261 7 char Virtual console capture devices
262 0 = /dev/vcs Current vc text contents
263 1 = /dev/vcs1 tty1 text contents
264 ...
265 63 = /dev/vcs63 tty63 text contents
266 128 = /dev/vcsa Current vc text/attribute contents
267 129 = /dev/vcsa1 tty1 text/attribute contents
268 ...
269 191 = /dev/vcsa63 tty63 text/attribute contents
271 NOTE: These devices permit both read and write access.
273 7 block Loopback devices
274 0 = /dev/loop0 First loop device
275 1 = /dev/loop1 Second loop device
276 ...
278 The loop devices are used to mount filesystems not
279 associated with block devices. The binding to the
280 loop devices is handled by mount(8) or losetup(8).
282 8 block SCSI disk devices (0-15)
283 0 = /dev/sda First SCSI disk whole disk
284 16 = /dev/sdb Second SCSI disk whole disk
285 32 = /dev/sdc Third SCSI disk whole disk
286 ...
287 240 = /dev/sdp Sixteenth SCSI disk whole disk
289 Partitions are handled in the same way as for IDE
290 disks (see major number 3) except that the limit on
291 partitions is 15.
293 9 char SCSI tape devices
294 0 = /dev/st0 First SCSI tape, mode 0
295 1 = /dev/st1 Second SCSI tape, mode 0
296 ...
297 32 = /dev/st0l First SCSI tape, mode 1
298 33 = /dev/st1l Second SCSI tape, mode 1
299 ...
300 64 = /dev/st0m First SCSI tape, mode 2
301 65 = /dev/st1m Second SCSI tape, mode 2
302 ...
303 96 = /dev/st0a First SCSI tape, mode 3
304 97 = /dev/st1a Second SCSI tape, mode 3
305 ...
306 128 = /dev/nst0 First SCSI tape, mode 0, no rewind
307 129 = /dev/nst1 Second SCSI tape, mode 0, no rewind
308 ...
309 160 = /dev/nst0l First SCSI tape, mode 1, no rewind
310 161 = /dev/nst1l Second SCSI tape, mode 1, no rewind
311 ...
312 192 = /dev/nst0m First SCSI tape, mode 2, no rewind
313 193 = /dev/nst1m Second SCSI tape, mode 2, no rewind
314 ...
315 224 = /dev/nst0a First SCSI tape, mode 3, no rewind
316 225 = /dev/nst1a Second SCSI tape, mode 3, no rewind
317 ...
319 "No rewind" refers to the omission of the default
320 automatic rewind on device close. The MTREW or MTOFFL
321 ioctl()'s can be used to rewind the tape regardless of
322 the device used to access it.
324 9 block Metadisk (RAID) devices
325 0 = /dev/md0 First metadisk group
326 1 = /dev/md1 Second metadisk group
327 ...
329 The metadisk driver is used to span a
330 filesystem across multiple physical disks.
332 10 char Non-serial mice, misc features
333 0 = /dev/logibm Logitech bus mouse
334 1 = /dev/psaux PS/2-style mouse port
335 2 = /dev/inportbm Microsoft Inport bus mouse
336 3 = /dev/atibm ATI XL bus mouse
337 4 = /dev/jbm J-mouse
338 4 = /dev/amigamouse Amiga mouse (68k/Amiga)
339 5 = /dev/atarimouse Atari mouse
340 6 = /dev/sunmouse Sun mouse
341 7 = /dev/amigamouse1 Second Amiga mouse
342 8 = /dev/smouse Simple serial mouse driver
343 9 = /dev/pc110pad IBM PC-110 digitizer pad
344 10 = /dev/adbmouse Apple Desktop Bus mouse
345 11 = /dev/vrtpanel Vr41xx embedded touch panel
346 13 = /dev/vpcmouse Connectix Virtual PC Mouse
347 14 = /dev/touchscreen/ucb1x00 UCB 1x00 touchscreen
348 15 = /dev/touchscreen/mk712 MK712 touchscreen
349 128 = /dev/beep Fancy beep device
350 129 =
351 130 = /dev/watchdog Watchdog timer port
352 131 = /dev/temperature Machine internal temperature
353 132 = /dev/hwtrap Hardware fault trap
354 133 = /dev/exttrp External device trap
355 134 = /dev/apm_bios Advanced Power Management BIOS
356 135 = /dev/rtc Real Time Clock
357 139 = /dev/openprom SPARC OpenBoot PROM
358 140 = /dev/relay8 Berkshire Products Octal relay card
359 141 = /dev/relay16 Berkshire Products ISO-16 relay card
360 142 =
361 143 = /dev/pciconf PCI configuration space
362 144 = /dev/nvram Non-volatile configuration RAM
363 145 = /dev/hfmodem Soundcard shortwave modem control
364 146 = /dev/graphics Linux/SGI graphics device
365 147 = /dev/opengl Linux/SGI OpenGL pipe
366 148 = /dev/gfx Linux/SGI graphics effects device
367 149 = /dev/input/mouse Linux/SGI Irix emulation mouse
368 150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard
369 151 = /dev/led Front panel LEDs
370 152 = /dev/kpoll Kernel Poll Driver
371 153 = /dev/mergemem Memory merge device
372 154 = /dev/pmu Macintosh PowerBook power manager
373 155 = /dev/isictl MultiTech ISICom serial control
374 156 = /dev/lcd Front panel LCD display
375 157 = /dev/ac Applicom Intl Profibus card
376 158 = /dev/nwbutton Netwinder external button
377 159 = /dev/nwdebug Netwinder debug interface
378 160 = /dev/nwflash Netwinder flash memory
379 161 = /dev/userdma User-space DMA access
380 162 = /dev/smbus System Management Bus
381 163 = /dev/lik Logitech Internet Keyboard
382 164 = /dev/ipmo Intel Intelligent Platform Management
383 165 = /dev/vmmon VMware virtual machine monitor
384 166 = /dev/i2o/ctl I2O configuration manager
385 167 = /dev/specialix_sxctl Specialix serial control
386 168 = /dev/tcldrv Technology Concepts serial control
387 169 = /dev/specialix_rioctl Specialix RIO serial control
388 170 = /dev/thinkpad/thinkpad IBM Thinkpad devices
389 171 = /dev/srripc QNX4 API IPC manager
390 172 = /dev/usemaclone Semaphore clone device
391 173 = /dev/ipmikcs Intelligent Platform Management
392 174 = /dev/uctrl SPARCbook 3 microcontroller
393 175 = /dev/agpgart AGP Graphics Address Remapping Table
394 176 = /dev/gtrsc Gorgy Timing radio clock
395 177 = /dev/cbm Serial CBM bus
396 178 = /dev/jsflash JavaStation OS flash SIMM
397 179 = /dev/xsvc High-speed shared-mem/semaphore service
398 180 = /dev/vrbuttons Vr41xx button input device
399 181 = /dev/toshiba Toshiba laptop SMM support
400 182 = /dev/perfctr Performance-monitoring counters
401 183 = /dev/hwrng Generic random number generator
402 184 = /dev/cpu/microcode CPU microcode update interface
403 186 = /dev/atomicps Atomic shapshot of process state data
404 187 = /dev/irnet IrNET device
405 188 = /dev/smbusbios SMBus BIOS
406 189 = /dev/ussp_ctl User space serial port control
407 190 = /dev/crash Mission Critical Linux crash dump facility
408 191 = /dev/pcl181 <information missing>
409 192 = /dev/nas_xbus NAS xbus LCD/buttons access
410 193 = /dev/d7s SPARC 7-segment display
411 194 = /dev/zkshim Zero-Knowledge network shim control
412 195 = /dev/elographics/e2201 Elographics touchscreen E271-2201
413 198 = /dev/sexec Signed executable interface
414 199 = /dev/scanners/cuecat :CueCat barcode scanner
415 200 = /dev/net/tun TAP/TUN network device
416 201 = /dev/button/gulpb Transmeta GULP-B buttons
417 202 = /dev/emd/ctl Enhanced Metadisk RAID (EMD) control
418 204 = /dev/video/em8300 EM8300 DVD decoder control
419 205 = /dev/video/em8300_mv EM8300 DVD decoder video
420 206 = /dev/video/em8300_ma EM8300 DVD decoder audio
421 207 = /dev/video/em8300_sp EM8300 DVD decoder subpicture
422 208 = /dev/compaq/cpqphpc Compaq PCI Hot Plug Controller
423 209 = /dev/compaq/cpqrid Compaq Remote Insight Driver
424 210 = /dev/impi/bt IMPI coprocessor block transfer
425 211 = /dev/impi/smic IMPI coprocessor stream interface
426 212 = /dev/watchdogs/0 First watchdog device
427 213 = /dev/watchdogs/1 Second watchdog device
428 214 = /dev/watchdogs/2 Third watchdog device
429 215 = /dev/watchdogs/3 Fourth watchdog device
430 216 = /dev/fujitsu/apanel Fujitsu/Siemens application panel
431 217 = /dev/ni/natmotn National Instruments Motion
432 218 = /dev/kchuid Inter-process chuid control
433 219 = /dev/modems/mwave MWave modem firmware upload
434 220 = /dev/mptctl Message passing technology (MPT) control
435 221 = /dev/mvista/hssdsi Montavista PICMG hot swap system driver
436 222 = /dev/mvista/hasi Montavista PICMG high availability
437 223 = /dev/input/uinput User level driver support for input
438 224 = /dev/tpm TCPA TPM driver
439 225 = /dev/pps Pulse Per Second driver
440 226 = /dev/systrace Systrace device
441 227 = /dev/mcelog X86_64 Machine Check Exception driver
442 228 = /dev/hpet HPET driver
443 229 = /dev/fuse Fuse (virtual filesystem in user-space)
444 230 = /dev/midishare MidiShare driver
445 231 = /dev/snapshot System memory snapshot device
446 232 = /dev/kvm Kernel-based virtual machine (hardware virtualization extensions)
447 233 = /dev/kmview View-OS A process with a view
448 234 = /dev/btrfs-control Btrfs control device
449 235 = /dev/autofs Autofs control device
450 236 = /dev/mapper/control Device-Mapper control device
451 237 = /dev/loop-control Loopback control device
452 238 = /dev/vhost-net Host kernel accelerator for virtio net
454 240-254 Reserved for local use
455 255 Reserved for MISC_DYNAMIC_MINOR
457 11 char Raw keyboard device (Linux/SPARC only)
458 0 = /dev/kbd Raw keyboard device
460 11 char Serial Mux device (Linux/PA-RISC only)
461 0 = /dev/ttyB0 First mux port
462 1 = /dev/ttyB1 Second mux port
463 ...
465 11 block SCSI CD-ROM devices
466 0 = /dev/scd0 First SCSI CD-ROM
467 1 = /dev/scd1 Second SCSI CD-ROM
468 ...
470 The prefix /dev/sr (instead of /dev/scd) has been deprecated.
472 12 char QIC-02 tape
473 2 = /dev/ntpqic11 QIC-11, no rewind-on-close
474 3 = /dev/tpqic11 QIC-11, rewind-on-close
475 4 = /dev/ntpqic24 QIC-24, no rewind-on-close
476 5 = /dev/tpqic24 QIC-24, rewind-on-close
477 6 = /dev/ntpqic120 QIC-120, no rewind-on-close
478 7 = /dev/tpqic120 QIC-120, rewind-on-close
479 8 = /dev/ntpqic150 QIC-150, no rewind-on-close
480 9 = /dev/tpqic150 QIC-150, rewind-on-close
482 The device names specified are proposed -- if there
483 are "standard" names for these devices, please let me know.
485 12 block
487 13 char Input core
488 0 = /dev/input/js0 First joystick
489 1 = /dev/input/js1 Second joystick
490 ...
491 32 = /dev/input/mouse0 First mouse
492 33 = /dev/input/mouse1 Second mouse
493 ...
494 63 = /dev/input/mice Unified mouse
495 64 = /dev/input/event0 First event queue
496 65 = /dev/input/event1 Second event queue
497 ...
499 Each device type has 5 bits (32 minors).
501 13 block 8-bit MFM/RLL/IDE controller
502 0 = /dev/xda First XT disk whole disk
503 64 = /dev/xdb Second XT disk whole disk
505 Partitions are handled in the same way as IDE disks
506 (see major number 3).
508 14 char Open Sound System (OSS)
509 0 = /dev/mixer Mixer control
510 1 = /dev/sequencer Audio sequencer
511 2 = /dev/midi00 First MIDI port
512 3 = /dev/dsp Digital audio
513 4 = /dev/audio Sun-compatible digital audio
514 6 =
515 7 = /dev/audioctl SPARC audio control device
516 8 = /dev/sequencer2 Sequencer -- alternate device
517 16 = /dev/mixer1 Second soundcard mixer control
518 17 = /dev/patmgr0 Sequencer patch manager
519 18 = /dev/midi01 Second MIDI port
520 19 = /dev/dsp1 Second soundcard digital audio
521 20 = /dev/audio1 Second soundcard Sun digital audio
522 33 = /dev/patmgr1 Sequencer patch manager
523 34 = /dev/midi02 Third MIDI port
524 50 = /dev/midi03 Fourth MIDI port
526 14 block
528 15 char Joystick
529 0 = /dev/js0 First analog joystick
530 1 = /dev/js1 Second analog joystick
531 ...
532 128 = /dev/djs0 First digital joystick
533 129 = /dev/djs1 Second digital joystick
534 ...
535 15 block Sony CDU-31A/CDU-33A CD-ROM
536 0 = /dev/sonycd Sony CDU-31a CD-ROM
538 16 char Non-SCSI scanners
539 0 = /dev/gs4500 Genius 4500 handheld scanner
541 16 block GoldStar CD-ROM
542 0 = /dev/gscd GoldStar CD-ROM
544 17 char OBSOLETE (was Chase serial card)
545 0 = /dev/ttyH0 First Chase port
546 1 = /dev/ttyH1 Second Chase port
547 ...
548 17 block Optics Storage CD-ROM
549 0 = /dev/optcd Optics Storage CD-ROM
551 18 char OBSOLETE (was Chase serial card - alternate devices)
552 0 = /dev/cuh0 Callout device for ttyH0
553 1 = /dev/cuh1 Callout device for ttyH1
554 ...
555 18 block Sanyo CD-ROM
556 0 = /dev/sjcd Sanyo CD-ROM
558 19 char Cyclades serial card
559 0 = /dev/ttyC0 First Cyclades port
560 ...
561 31 = /dev/ttyC31 32nd Cyclades port
563 19 block "Double" compressed disk
564 0 = /dev/double0 First compressed disk
565 ...
566 7 = /dev/double7 Eighth compressed disk
567 128 = /dev/cdouble0 Mirror of first compressed disk
568 ...
569 135 = /dev/cdouble7 Mirror of eighth compressed disk
571 See the Double documentation for the meaning of the
572 mirror devices.
574 20 char Cyclades serial card - alternate devices
575 0 = /dev/cub0 Callout device for ttyC0
576 ...
577 31 = /dev/cub31 Callout device for ttyC31
579 20 block Hitachi CD-ROM (under development)
580 0 = /dev/hitcd Hitachi CD-ROM
582 21 char Generic SCSI access
583 0 = /dev/sg0 First generic SCSI device
584 1 = /dev/sg1 Second generic SCSI device
585 ...
587 Most distributions name these /dev/sga, /dev/sgb...;
588 this sets an unnecessary limit of 26 SCSI devices in
589 the system and is counter to standard Linux
590 device-naming practice.
592 21 block Acorn MFM hard drive interface
593 0 = /dev/mfma First MFM drive whole disk
594 64 = /dev/mfmb Second MFM drive whole disk
596 This device is used on the ARM-based Acorn RiscPC.
597 Partitions are handled the same way as for IDE disks
598 (see major number 3).
600 22 char Digiboard serial card
601 0 = /dev/ttyD0 First Digiboard port
602 1 = /dev/ttyD1 Second Digiboard port
603 ...
604 22 block Second IDE hard disk/CD-ROM interface
605 0 = /dev/hdc Master: whole disk (or CD-ROM)
606 64 = /dev/hdd Slave: whole disk (or CD-ROM)
608 Partitions are handled the same way as for the first
609 interface (see major number 3).
611 23 char Digiboard serial card - alternate devices
612 0 = /dev/cud0 Callout device for ttyD0
613 1 = /dev/cud1 Callout device for ttyD1
614 ...
615 23 block Mitsumi proprietary CD-ROM
616 0 = /dev/mcd Mitsumi CD-ROM
618 24 char Stallion serial card
619 0 = /dev/ttyE0 Stallion port 0 card 0
620 1 = /dev/ttyE1 Stallion port 1 card 0
621 ...
622 64 = /dev/ttyE64 Stallion port 0 card 1
623 65 = /dev/ttyE65 Stallion port 1 card 1
624 ...
625 128 = /dev/ttyE128 Stallion port 0 card 2
626 129 = /dev/ttyE129 Stallion port 1 card 2
627 ...
628 192 = /dev/ttyE192 Stallion port 0 card 3
629 193 = /dev/ttyE193 Stallion port 1 card 3
630 ...
631 24 block Sony CDU-535 CD-ROM
632 0 = /dev/cdu535 Sony CDU-535 CD-ROM
634 25 char Stallion serial card - alternate devices
635 0 = /dev/cue0 Callout device for ttyE0
636 1 = /dev/cue1 Callout device for ttyE1
637 ...
638 64 = /dev/cue64 Callout device for ttyE64
639 65 = /dev/cue65 Callout device for ttyE65
640 ...
641 128 = /dev/cue128 Callout device for ttyE128
642 129 = /dev/cue129 Callout device for ttyE129
643 ...
644 192 = /dev/cue192 Callout device for ttyE192
645 193 = /dev/cue193 Callout device for ttyE193
646 ...
647 25 block First Matsushita (Panasonic/SoundBlaster) CD-ROM
648 0 = /dev/sbpcd0 Panasonic CD-ROM controller 0 unit 0
649 1 = /dev/sbpcd1 Panasonic CD-ROM controller 0 unit 1
650 2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2
651 3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3
653 26 char
655 26 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM
656 0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0
657 1 = /dev/sbpcd5 Panasonic CD-ROM controller 1 unit 1
658 2 = /dev/sbpcd6 Panasonic CD-ROM controller 1 unit 2
659 3 = /dev/sbpcd7 Panasonic CD-ROM controller 1 unit 3
661 27 char QIC-117 tape
662 0 = /dev/qft0 Unit 0, rewind-on-close
663 1 = /dev/qft1 Unit 1, rewind-on-close
664 2 = /dev/qft2 Unit 2, rewind-on-close
665 3 = /dev/qft3 Unit 3, rewind-on-close
666 4 = /dev/nqft0 Unit 0, no rewind-on-close
667 5 = /dev/nqft1 Unit 1, no rewind-on-close
668 6 = /dev/nqft2 Unit 2, no rewind-on-close
669 7 = /dev/nqft3 Unit 3, no rewind-on-close
670 16 = /dev/zqft0 Unit 0, rewind-on-close, compression
671 17 = /dev/zqft1 Unit 1, rewind-on-close, compression
672 18 = /dev/zqft2 Unit 2, rewind-on-close, compression
673 19 = /dev/zqft3 Unit 3, rewind-on-close, compression
674 20 = /dev/nzqft0 Unit 0, no rewind-on-close, compression
675 21 = /dev/nzqft1 Unit 1, no rewind-on-close, compression
676 22 = /dev/nzqft2 Unit 2, no rewind-on-close, compression
677 23 = /dev/nzqft3 Unit 3, no rewind-on-close, compression
678 32 = /dev/rawqft0 Unit 0, rewind-on-close, no file marks
679 33 = /dev/rawqft1 Unit 1, rewind-on-close, no file marks
680 34 = /dev/rawqft2 Unit 2, rewind-on-close, no file marks
681 35 = /dev/rawqft3 Unit 3, rewind-on-close, no file marks
682 36 = /dev/nrawqft0 Unit 0, no rewind-on-close, no file marks
683 37 = /dev/nrawqft1 Unit 1, no rewind-on-close, no file marks
684 38 = /dev/nrawqft2 Unit 2, no rewind-on-close, no file marks
685 39 = /dev/nrawqft3 Unit 3, no rewind-on-close, no file marks
687 27 block Third Matsushita (Panasonic/SoundBlaster) CD-ROM
688 0 = /dev/sbpcd8 Panasonic CD-ROM controller 2 unit 0
689 1 = /dev/sbpcd9 Panasonic CD-ROM controller 2 unit 1
690 2 = /dev/sbpcd10 Panasonic CD-ROM controller 2 unit 2
691 3 = /dev/sbpcd11 Panasonic CD-ROM controller 2 unit 3
693 28 char Stallion serial card - card programming
694 0 = /dev/staliomem0 First Stallion card I/O memory
695 1 = /dev/staliomem1 Second Stallion card I/O memory
696 2 = /dev/staliomem2 Third Stallion card I/O memory
697 3 = /dev/staliomem3 Fourth Stallion card I/O memory
699 28 char Atari SLM ACSI laser printer (68k/Atari)
700 0 = /dev/slm0 First SLM laser printer
701 1 = /dev/slm1 Second SLM laser printer
702 ...
703 28 block Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
704 0 = /dev/sbpcd12 Panasonic CD-ROM controller 3 unit 0
705 1 = /dev/sbpcd13 Panasonic CD-ROM controller 3 unit 1
706 2 = /dev/sbpcd14 Panasonic CD-ROM controller 3 unit 2
707 3 = /dev/sbpcd15 Panasonic CD-ROM controller 3 unit 3
709 28 block ACSI disk (68k/Atari)
710 0 = /dev/ada First ACSI disk whole disk
711 16 = /dev/adb Second ACSI disk whole disk
712 32 = /dev/adc Third ACSI disk whole disk
713 ...
714 240 = /dev/adp 16th ACSI disk whole disk
716 Partitions are handled in the same way as for IDE
717 disks (see major number 3) except that the limit on
718 partitions is 15, like SCSI.
720 29 char Universal frame buffer
721 0 = /dev/fb0 First frame buffer
722 1 = /dev/fb1 Second frame buffer
723 ...
724 31 = /dev/fb31 32nd frame buffer
726 29 block Aztech/Orchid/Okano/Wearnes CD-ROM
727 0 = /dev/aztcd Aztech CD-ROM
729 30 char iBCS-2 compatibility devices
730 0 = /dev/socksys Socket access
731 1 = /dev/spx SVR3 local X interface
732 32 = /dev/inet/ip Network access
733 33 = /dev/inet/icmp
734 34 = /dev/inet/ggp
735 35 = /dev/inet/ipip
736 36 = /dev/inet/tcp
737 37 = /dev/inet/egp
738 38 = /dev/inet/pup
739 39 = /dev/inet/udp
740 40 = /dev/inet/idp
741 41 = /dev/inet/rawip
743 Additionally, iBCS-2 requires the following links:
745 /dev/ip -> /dev/inet/ip
746 /dev/icmp -> /dev/inet/icmp
747 /dev/ggp -> /dev/inet/ggp
748 /dev/ipip -> /dev/inet/ipip
749 /dev/tcp -> /dev/inet/tcp
750 /dev/egp -> /dev/inet/egp
751 /dev/pup -> /dev/inet/pup
752 /dev/udp -> /dev/inet/udp
753 /dev/idp -> /dev/inet/idp
754 /dev/rawip -> /dev/inet/rawip
755 /dev/inet/arp -> /dev/inet/udp
756 /dev/inet/rip -> /dev/inet/udp
757 /dev/nfsd -> /dev/socksys
758 /dev/X0R -> /dev/null (? apparently not required ?)
760 30 block Philips LMS CM-205 CD-ROM
761 0 = /dev/cm205cd Philips LMS CM-205 CD-ROM
763 /dev/lmscd is an older name for this device. This
764 driver does not work with the CM-205MS CD-ROM.
766 31 char MPU-401 MIDI
767 0 = /dev/mpu401data MPU-401 data port
768 1 = /dev/mpu401stat MPU-401 status port
770 31 block ROM/flash memory card
771 0 = /dev/rom0 First ROM card (rw)
772 ...
773 7 = /dev/rom7 Eighth ROM card (rw)
774 8 = /dev/rrom0 First ROM card (ro)
775 ...
776 15 = /dev/rrom7 Eighth ROM card (ro)
777 16 = /dev/flash0 First flash memory card (rw)
778 ...
779 23 = /dev/flash7 Eighth flash memory card (rw)
780 24 = /dev/rflash0 First flash memory card (ro)
781 ...
782 31 = /dev/rflash7 Eighth flash memory card (ro)
784 The read-write (rw) devices support back-caching
785 written data in RAM, as well as writing to flash RAM
786 devices. The read-only devices (ro) support reading
787 only.
789 32 char Specialix serial card
790 0 = /dev/ttyX0 First Specialix port
791 1 = /dev/ttyX1 Second Specialix port
792 ...
793 32 block Philips LMS CM-206 CD-ROM
794 0 = /dev/cm206cd Philips LMS CM-206 CD-ROM
796 33 char Specialix serial card - alternate devices
797 0 = /dev/cux0 Callout device for ttyX0
798 1 = /dev/cux1 Callout device for ttyX1
799 ...
800 33 block Third IDE hard disk/CD-ROM interface
801 0 = /dev/hde Master: whole disk (or CD-ROM)
802 64 = /dev/hdf Slave: whole disk (or CD-ROM)
804 Partitions are handled the same way as for the first
805 interface (see major number 3).
807 34 char Z8530 HDLC driver
808 0 = /dev/scc0 First Z8530, first port
809 1 = /dev/scc1 First Z8530, second port
810 2 = /dev/scc2 Second Z8530, first port
811 3 = /dev/scc3 Second Z8530, second port
812 ...
814 In a previous version these devices were named
815 /dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
816 on.
818 34 block Fourth IDE hard disk/CD-ROM interface
819 0 = /dev/hdg Master: whole disk (or CD-ROM)
820 64 = /dev/hdh Slave: whole disk (or CD-ROM)
822 Partitions are handled the same way as for the first
823 interface (see major number 3).
825 35 char tclmidi MIDI driver
826 0 = /dev/midi0 First MIDI port, kernel timed
827 1 = /dev/midi1 Second MIDI port, kernel timed
828 2 = /dev/midi2 Third MIDI port, kernel timed
829 3 = /dev/midi3 Fourth MIDI port, kernel timed
830 64 = /dev/rmidi0 First MIDI port, untimed
831 65 = /dev/rmidi1 Second MIDI port, untimed
832 66 = /dev/rmidi2 Third MIDI port, untimed
833 67 = /dev/rmidi3 Fourth MIDI port, untimed
834 128 = /dev/smpte0 First MIDI port, SMPTE timed
835 129 = /dev/smpte1 Second MIDI port, SMPTE timed
836 130 = /dev/smpte2 Third MIDI port, SMPTE timed
837 131 = /dev/smpte3 Fourth MIDI port, SMPTE timed
839 35 block Slow memory ramdisk
840 0 = /dev/slram Slow memory ramdisk
842 36 char Netlink support
843 0 = /dev/route Routing, device updates, kernel to user
844 1 = /dev/skip enSKIP security cache control
845 3 = /dev/fwmonitor Firewall packet copies
846 16 = /dev/tap0 First Ethertap device
847 ...
848 31 = /dev/tap15 16th Ethertap device
850 36 block OBSOLETE (was MCA ESDI hard disk)
852 37 char IDE tape
853 0 = /dev/ht0 First IDE tape
854 1 = /dev/ht1 Second IDE tape
855 ...
856 128 = /dev/nht0 First IDE tape, no rewind-on-close
857 129 = /dev/nht1 Second IDE tape, no rewind-on-close
858 ...
860 Currently, only one IDE tape drive is supported.
862 37 block Zorro II ramdisk
863 0 = /dev/z2ram Zorro II ramdisk
865 38 char Myricom PCI Myrinet board
866 0 = /dev/mlanai0 First Myrinet board
867 1 = /dev/mlanai1 Second Myrinet board
868 ...
870 This device is used for status query, board control
871 and "user level packet I/O." This board is also
872 accessible as a standard networking "eth" device.
874 38 block OBSOLETE (was Linux/AP+)
876 39 char ML-16P experimental I/O board
877 0 = /dev/ml16pa-a0 First card, first analog channel
878 1 = /dev/ml16pa-a1 First card, second analog channel
879 ...
880 15 = /dev/ml16pa-a15 First card, 16th analog channel
881 16 = /dev/ml16pa-d First card, digital lines
882 17 = /dev/ml16pa-c0 First card, first counter/timer
883 18 = /dev/ml16pa-c1 First card, second counter/timer
884 19 = /dev/ml16pa-c2 First card, third counter/timer
885 32 = /dev/ml16pb-a0 Second card, first analog channel
886 33 = /dev/ml16pb-a1 Second card, second analog channel
887 ...
888 47 = /dev/ml16pb-a15 Second card, 16th analog channel
889 48 = /dev/ml16pb-d Second card, digital lines
890 49 = /dev/ml16pb-c0 Second card, first counter/timer
891 50 = /dev/ml16pb-c1 Second card, second counter/timer
892 51 = /dev/ml16pb-c2 Second card, third counter/timer
893 ...
894 39 block
896 40 char
898 40 block
900 41 char Yet Another Micro Monitor
901 0 = /dev/yamm Yet Another Micro Monitor
903 41 block
905 42 char Demo/sample use
907 42 block Demo/sample use
909 This number is intended for use in sample code, as
910 well as a general "example" device number. It
911 should never be used for a device driver that is being
912 distributed; either obtain an official number or use
913 the local/experimental range. The sudden addition or
914 removal of a driver with this number should not cause
915 ill effects to the system (bugs excepted.)
917 IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
918 DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
920 43 char isdn4linux virtual modem
921 0 = /dev/ttyI0 First virtual modem
922 ...
923 63 = /dev/ttyI63 64th virtual modem
925 43 block Network block devices
926 0 = /dev/nb0 First network block device
927 1 = /dev/nb1 Second network block device
928 ...
930 Network Block Device is somehow similar to loopback
931 devices: If you read from it, it sends packet across
932 network asking server for data. If you write to it, it
933 sends packet telling server to write. It could be used
934 to mounting filesystems over the net, swapping over
935 the net, implementing block device in userland etc.
937 44 char isdn4linux virtual modem - alternate devices
938 0 = /dev/cui0 Callout device for ttyI0
939 ...
940 63 = /dev/cui63 Callout device for ttyI63
942 44 block Flash Translation Layer (FTL) filesystems
943 0 = /dev/ftla FTL on first Memory Technology Device
944 16 = /dev/ftlb FTL on second Memory Technology Device
945 32 = /dev/ftlc FTL on third Memory Technology Device
946 ...
947 240 = /dev/ftlp FTL on 16th Memory Technology Device
949 Partitions are handled in the same way as for IDE
950 disks (see major number 3) except that the partition
951 limit is 15 rather than 63 per disk (same as SCSI.)
953 45 char isdn4linux ISDN BRI driver
954 0 = /dev/isdn0 First virtual B channel raw data
955 ...
956 63 = /dev/isdn63 64th virtual B channel raw data
957 64 = /dev/isdnctrl0 First channel control/debug
958 ...
959 127 = /dev/isdnctrl63 64th channel control/debug
961 128 = /dev/ippp0 First SyncPPP device
962 ...
963 191 = /dev/ippp63 64th SyncPPP device
965 255 = /dev/isdninfo ISDN monitor interface
967 45 block Parallel port IDE disk devices
968 0 = /dev/pda First parallel port IDE disk
969 16 = /dev/pdb Second parallel port IDE disk
970 32 = /dev/pdc Third parallel port IDE disk
971 48 = /dev/pdd Fourth parallel port IDE disk
973 Partitions are handled in the same way as for IDE
974 disks (see major number 3) except that the partition
975 limit is 15 rather than 63 per disk.
977 46 char Comtrol Rocketport serial card
978 0 = /dev/ttyR0 First Rocketport port
979 1 = /dev/ttyR1 Second Rocketport port
980 ...
981 46 block Parallel port ATAPI CD-ROM devices
982 0 = /dev/pcd0 First parallel port ATAPI CD-ROM
983 1 = /dev/pcd1 Second parallel port ATAPI CD-ROM
984 2 = /dev/pcd2 Third parallel port ATAPI CD-ROM
985 3 = /dev/pcd3 Fourth parallel port ATAPI CD-ROM
987 47 char Comtrol Rocketport serial card - alternate devices
988 0 = /dev/cur0 Callout device for ttyR0
989 1 = /dev/cur1 Callout device for ttyR1
990 ...
991 47 block Parallel port ATAPI disk devices
992 0 = /dev/pf0 First parallel port ATAPI disk
993 1 = /dev/pf1 Second parallel port ATAPI disk
994 2 = /dev/pf2 Third parallel port ATAPI disk
995 3 = /dev/pf3 Fourth parallel port ATAPI disk
997 This driver is intended for floppy disks and similar
998 devices and hence does not support partitioning.
1000 48 char SDL RISCom serial card
1001 0 = /dev/ttyL0 First RISCom port
1002 1 = /dev/ttyL1 Second RISCom port
1003 ...
1004 48 block Mylex DAC960 PCI RAID controller; first controller
1005 0 = /dev/rd/c0d0 First disk, whole disk
1006 8 = /dev/rd/c0d1 Second disk, whole disk
1007 ...
1008 248 = /dev/rd/c0d31 32nd disk, whole disk
1010 For partitions add:
1011 0 = /dev/rd/c?d? Whole disk
1012 1 = /dev/rd/c?d?p1 First partition
1013 ...
1014 7 = /dev/rd/c?d?p7 Seventh partition
1016 49 char SDL RISCom serial card - alternate devices
1017 0 = /dev/cul0 Callout device for ttyL0
1018 1 = /dev/cul1 Callout device for ttyL1
1019 ...
1020 49 block Mylex DAC960 PCI RAID controller; second controller
1021 0 = /dev/rd/c1d0 First disk, whole disk
1022 8 = /dev/rd/c1d1 Second disk, whole disk
1023 ...
1024 248 = /dev/rd/c1d31 32nd disk, whole disk
1026 Partitions are handled as for major 48.
1028 50 char Reserved for GLINT
1030 50 block Mylex DAC960 PCI RAID controller; third controller
1031 0 = /dev/rd/c2d0 First disk, whole disk
1032 8 = /dev/rd/c2d1 Second disk, whole disk
1033 ...
1034 248 = /dev/rd/c2d31 32nd disk, whole disk
1036 51 char Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
1037 0 = /dev/bc0 First Baycom radio modem
1038 1 = /dev/bc1 Second Baycom radio modem
1039 ...
1040 51 block Mylex DAC960 PCI RAID controller; fourth controller
1041 0 = /dev/rd/c3d0 First disk, whole disk
1042 8 = /dev/rd/c3d1 Second disk, whole disk
1043 ...
1044 248 = /dev/rd/c3d31 32nd disk, whole disk
1046 Partitions are handled as for major 48.
1048 52 char Spellcaster DataComm/BRI ISDN card
1049 0 = /dev/dcbri0 First DataComm card
1050 1 = /dev/dcbri1 Second DataComm card
1051 2 = /dev/dcbri2 Third DataComm card
1052 3 = /dev/dcbri3 Fourth DataComm card
1054 52 block Mylex DAC960 PCI RAID controller; fifth controller
1055 0 = /dev/rd/c4d0 First disk, whole disk
1056 8 = /dev/rd/c4d1 Second disk, whole disk
1057 ...
1058 248 = /dev/rd/c4d31 32nd disk, whole disk
1060 Partitions are handled as for major 48.
1062 53 char BDM interface for remote debugging MC683xx microcontrollers
1063 0 = /dev/pd_bdm0 PD BDM interface on lp0
1064 1 = /dev/pd_bdm1 PD BDM interface on lp1
1065 2 = /dev/pd_bdm2 PD BDM interface on lp2
1066 4 = /dev/icd_bdm0 ICD BDM interface on lp0
1067 5 = /dev/icd_bdm1 ICD BDM interface on lp1
1068 6 = /dev/icd_bdm2 ICD BDM interface on lp2
1070 This device is used for the interfacing to the MC683xx
1071 microcontrollers via Background Debug Mode by use of a
1072 Parallel Port interface. PD is the Motorola Public
1073 Domain Interface and ICD is the commercial interface
1074 by P&E.
1076 53 block Mylex DAC960 PCI RAID controller; sixth controller
1077 0 = /dev/rd/c5d0 First disk, whole disk
1078 8 = /dev/rd/c5d1 Second disk, whole disk
1079 ...
1080 248 = /dev/rd/c5d31 32nd disk, whole disk
1082 Partitions are handled as for major 48.
1084 54 char Electrocardiognosis Holter serial card
1085 0 = /dev/holter0 First Holter port
1086 1 = /dev/holter1 Second Holter port
1087 2 = /dev/holter2 Third Holter port
1089 A custom serial card used by Electrocardiognosis SRL
1090 <mseritan@ottonel.pub.ro> to transfer data from Holter
1091 24-hour heart monitoring equipment.
1093 54 block Mylex DAC960 PCI RAID controller; seventh controller
1094 0 = /dev/rd/c6d0 First disk, whole disk
1095 8 = /dev/rd/c6d1 Second disk, whole disk
1096 ...
1097 248 = /dev/rd/c6d31 32nd disk, whole disk
1099 Partitions are handled as for major 48.
1101 55 char DSP56001 digital signal processor
1102 0 = /dev/dsp56k First DSP56001
1104 55 block Mylex DAC960 PCI RAID controller; eighth controller
1105 0 = /dev/rd/c7d0 First disk, whole disk
1106 8 = /dev/rd/c7d1 Second disk, whole disk
1107 ...
1108 248 = /dev/rd/c7d31 32nd disk, whole disk
1110 Partitions are handled as for major 48.
1112 56 char Apple Desktop Bus
1113 0 = /dev/adb ADB bus control
1115 Additional devices will be added to this number, all
1116 starting with /dev/adb.
1118 56 block Fifth IDE hard disk/CD-ROM interface
1119 0 = /dev/hdi Master: whole disk (or CD-ROM)
1120 64 = /dev/hdj Slave: whole disk (or CD-ROM)
1122 Partitions are handled the same way as for the first
1123 interface (see major number 3).
1125 57 char Hayes ESP serial card
1126 0 = /dev/ttyP0 First ESP port
1127 1 = /dev/ttyP1 Second ESP port
1128 ...
1130 57 block Sixth IDE hard disk/CD-ROM interface
1131 0 = /dev/hdk Master: whole disk (or CD-ROM)
1132 64 = /dev/hdl Slave: whole disk (or CD-ROM)
1134 Partitions are handled the same way as for the first
1135 interface (see major number 3).
1137 58 char Hayes ESP serial card - alternate devices
1138 0 = /dev/cup0 Callout device for ttyP0
1139 1 = /dev/cup1 Callout device for ttyP1
1140 ...
1142 58 block Reserved for logical volume manager
1144 59 char sf firewall package
1145 0 = /dev/firewall Communication with sf kernel module
1147 59 block Generic PDA filesystem device
1148 0 = /dev/pda0 First PDA device
1149 1 = /dev/pda1 Second PDA device
1150 ...
1152 The pda devices are used to mount filesystems on
1153 remote pda's (basically slow handheld machines with
1154 proprietary OS's and limited memory and storage
1155 running small fs translation drivers) through serial /
1156 IRDA / parallel links.
1158 NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
1160 60-63 char LOCAL/EXPERIMENTAL USE
1162 60-63 block LOCAL/EXPERIMENTAL USE
1163 Allocated for local/experimental use. For devices not
1164 assigned official numbers, these ranges should be
1165 used in order to avoid conflicting with future assignments.
1167 64 char ENskip kernel encryption package
1168 0 = /dev/enskip Communication with ENskip kernel module
1170 64 block Scramdisk/DriveCrypt encrypted devices
1171 0 = /dev/scramdisk/master Master node for ioctls
1172 1 = /dev/scramdisk/1 First encrypted device
1173 2 = /dev/scramdisk/2 Second encrypted device
1174 ...
1175 255 = /dev/scramdisk/255 255th encrypted device
1177 The filename of the encrypted container and the passwords
1178 are sent via ioctls (using the sdmount tool) to the master
1179 node which then activates them via one of the
1180 /dev/scramdisk/x nodes for loop mounting (all handled
1181 through the sdmount tool).
1183 Requested by: andy@scramdisklinux.org
1185 65 char Sundance "plink" Transputer boards (obsolete, unused)
1186 0 = /dev/plink0 First plink device
1187 1 = /dev/plink1 Second plink device
1188 2 = /dev/plink2 Third plink device
1189 3 = /dev/plink3 Fourth plink device
1190 64 = /dev/rplink0 First plink device, raw
1191 65 = /dev/rplink1 Second plink device, raw
1192 66 = /dev/rplink2 Third plink device, raw
1193 67 = /dev/rplink3 Fourth plink device, raw
1194 128 = /dev/plink0d First plink device, debug
1195 129 = /dev/plink1d Second plink device, debug
1196 130 = /dev/plink2d Third plink device, debug
1197 131 = /dev/plink3d Fourth plink device, debug
1198 192 = /dev/rplink0d First plink device, raw, debug
1199 193 = /dev/rplink1d Second plink device, raw, debug
1200 194 = /dev/rplink2d Third plink device, raw, debug
1201 195 = /dev/rplink3d Fourth plink device, raw, debug
1203 This is a commercial driver; contact James Howes
1204 <jth@prosig.demon.co.uk> for information.
1206 65 block SCSI disk devices (16-31)
1207 0 = /dev/sdq 17th SCSI disk whole disk
1208 16 = /dev/sdr 18th SCSI disk whole disk
1209 32 = /dev/sds 19th SCSI disk whole disk
1210 ...
1211 240 = /dev/sdaf 32nd SCSI disk whole disk
1213 Partitions are handled in the same way as for IDE
1214 disks (see major number 3) except that the limit on
1215 partitions is 15.
1217 66 char YARC PowerPC PCI coprocessor card
1218 0 = /dev/yppcpci0 First YARC card
1219 1 = /dev/yppcpci1 Second YARC card
1220 ...
1222 66 block SCSI disk devices (32-47)
1223 0 = /dev/sdag 33th SCSI disk whole disk
1224 16 = /dev/sdah 34th SCSI disk whole disk
1225 32 = /dev/sdai 35th SCSI disk whole disk
1226 ...
1227 240 = /dev/sdav 48nd SCSI disk whole disk
1229 Partitions are handled in the same way as for IDE
1230 disks (see major number 3) except that the limit on
1231 partitions is 15.
1233 67 char Coda network file system
1234 0 = /dev/cfs0 Coda cache manager
1236 See http://www.coda.cs.cmu.edu for information about Coda.
1238 67 block SCSI disk devices (48-63)
1239 0 = /dev/sdaw 49th SCSI disk whole disk
1240 16 = /dev/sdax 50th SCSI disk whole disk
1241 32 = /dev/sday 51st SCSI disk whole disk
1242 ...
1243 240 = /dev/sdbl 64th SCSI disk whole disk
1245 Partitions are handled in the same way as for IDE
1246 disks (see major number 3) except that the limit on
1247 partitions is 15.
1249 68 char CAPI 2.0 interface
1250 0 = /dev/capi20 Control device
1251 1 = /dev/capi20.00 First CAPI 2.0 application
1252 2 = /dev/capi20.01 Second CAPI 2.0 application
1253 ...
1254 20 = /dev/capi20.19 19th CAPI 2.0 application
1256 ISDN CAPI 2.0 driver for use with CAPI 2.0
1257 applications; currently supports the AVM B1 card.
1259 68 block SCSI disk devices (64-79)
1260 0 = /dev/sdbm 65th SCSI disk whole disk
1261 16 = /dev/sdbn 66th SCSI disk whole disk
1262 32 = /dev/sdbo 67th SCSI disk whole disk
1263 ...
1264 240 = /dev/sdcb 80th SCSI disk whole disk
1266 Partitions are handled in the same way as for IDE
1267 disks (see major number 3) except that the limit on
1268 partitions is 15.
1270 69 char MA16 numeric accelerator card
1271 0 = /dev/ma16 Board memory access
1273 69 block SCSI disk devices (80-95)
1274 0 = /dev/sdcc 81st SCSI disk whole disk
1275 16 = /dev/sdcd 82nd SCSI disk whole disk
1276 32 = /dev/sdce 83th SCSI disk whole disk
1277 ...
1278 240 = /dev/sdcr 96th 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
1282 partitions is 15.
1284 70 char SpellCaster Protocol Services Interface
1285 0 = /dev/apscfg Configuration interface
1286 1 = /dev/apsauth Authentication interface
1287 2 = /dev/apslog Logging interface
1288 3 = /dev/apsdbg Debugging interface
1289 64 = /dev/apsisdn ISDN command interface
1290 65 = /dev/apsasync Async command interface
1291 128 = /dev/apsmon Monitor interface
1293 70 block SCSI disk devices (96-111)
1294 0 = /dev/sdcs 97th SCSI disk whole disk
1295 16 = /dev/sdct 98th SCSI disk whole disk
1296 32 = /dev/sdcu 99th SCSI disk whole disk
1297 ...
1298 240 = /dev/sddh 112nd SCSI disk whole disk
1300 Partitions are handled in the same way as for IDE
1301 disks (see major number 3) except that the limit on
1302 partitions is 15.
1304 71 char Computone IntelliPort II serial card
1305 0 = /dev/ttyF0 IntelliPort II board 0, port 0
1306 1 = /dev/ttyF1 IntelliPort II board 0, port 1
1307 ...
1308 63 = /dev/ttyF63 IntelliPort II board 0, port 63
1309 64 = /dev/ttyF64 IntelliPort II board 1, port 0
1310 65 = /dev/ttyF65 IntelliPort II board 1, port 1
1311 ...
1312 127 = /dev/ttyF127 IntelliPort II board 1, port 63
1313 128 = /dev/ttyF128 IntelliPort II board 2, port 0
1314 129 = /dev/ttyF129 IntelliPort II board 2, port 1
1315 ...
1316 191 = /dev/ttyF191 IntelliPort II board 2, port 63
1317 192 = /dev/ttyF192 IntelliPort II board 3, port 0
1318 193 = /dev/ttyF193 IntelliPort II board 3, port 1
1319 ...
1320 255 = /dev/ttyF255 IntelliPort II board 3, port 63
1322 71 block SCSI disk devices (112-127)
1323 0 = /dev/sddi 113th SCSI disk whole disk
1324 16 = /dev/sddj 114th SCSI disk whole disk
1325 32 = /dev/sddk 115th SCSI disk whole disk
1326 ...
1327 240 = /dev/sddx 128th SCSI disk whole disk
1329 Partitions are handled in the same way as for IDE
1330 disks (see major number 3) except that the limit on
1331 partitions is 15.
1333 72 char Computone IntelliPort II serial card - alternate devices
1334 0 = /dev/cuf0 Callout device for ttyF0
1335 1 = /dev/cuf1 Callout device for ttyF1
1336 ...
1337 63 = /dev/cuf63 Callout device for ttyF63
1338 64 = /dev/cuf64 Callout device for ttyF64
1339 65 = /dev/cuf65 Callout device for ttyF65
1340 ...
1341 127 = /dev/cuf127 Callout device for ttyF127
1342 128 = /dev/cuf128 Callout device for ttyF128
1343 129 = /dev/cuf129 Callout device for ttyF129
1344 ...
1345 191 = /dev/cuf191 Callout device for ttyF191
1346 192 = /dev/cuf192 Callout device for ttyF192
1347 193 = /dev/cuf193 Callout device for ttyF193
1348 ...
1349 255 = /dev/cuf255 Callout device for ttyF255
1351 72 block Compaq Intelligent Drive Array, first controller
1352 0 = /dev/ida/c0d0 First logical drive whole disk
1353 16 = /dev/ida/c0d1 Second logical drive whole disk
1354 ...
1355 240 = /dev/ida/c0d15 16th logical drive whole disk
1357 Partitions are handled the same way as for Mylex
1358 DAC960 (see major number 48) except that the limit on
1359 partitions is 15.
1361 73 char Computone IntelliPort II serial card - control devices
1362 0 = /dev/ip2ipl0 Loadware device for board 0
1363 1 = /dev/ip2stat0 Status device for board 0
1364 4 = /dev/ip2ipl1 Loadware device for board 1
1365 5 = /dev/ip2stat1 Status device for board 1
1366 8 = /dev/ip2ipl2 Loadware device for board 2
1367 9 = /dev/ip2stat2 Status device for board 2
1368 12 = /dev/ip2ipl3 Loadware device for board 3
1369 13 = /dev/ip2stat3 Status device for board 3
1371 73 block Compaq Intelligent Drive Array, second controller
1372 0 = /dev/ida/c1d0 First logical drive whole disk
1373 16 = /dev/ida/c1d1 Second logical drive whole disk
1374 ...
1375 240 = /dev/ida/c1d15 16th logical drive whole disk
1377 Partitions are handled the same way as for Mylex
1378 DAC960 (see major number 48) except that the limit on
1379 partitions is 15.
1381 74 char SCI bridge
1382 0 = /dev/SCI/0 SCI device 0
1383 1 = /dev/SCI/1 SCI device 1
1384 ...
1386 Currently for Dolphin Interconnect Solutions' PCI-SCI
1387 bridge.
1389 74 block Compaq Intelligent Drive Array, third controller
1390 0 = /dev/ida/c2d0 First logical drive whole disk
1391 16 = /dev/ida/c2d1 Second logical drive whole disk
1392 ...
1393 240 = /dev/ida/c2d15 16th logical drive whole disk
1395 Partitions are handled the same way as for Mylex
1396 DAC960 (see major number 48) except that the limit on
1397 partitions is 15.
1399 75 char Specialix IO8+ serial card
1400 0 = /dev/ttyW0 First IO8+ port, first card
1401 1 = /dev/ttyW1 Second IO8+ port, first card
1402 ...
1403 8 = /dev/ttyW8 First IO8+ port, second card
1404 ...
1406 75 block Compaq Intelligent Drive Array, fourth controller
1407 0 = /dev/ida/c3d0 First logical drive whole disk
1408 16 = /dev/ida/c3d1 Second logical drive whole disk
1409 ...
1410 240 = /dev/ida/c3d15 16th logical drive whole disk
1412 Partitions are handled the same way as for Mylex
1413 DAC960 (see major number 48) except that the limit on
1414 partitions is 15.
1416 76 char Specialix IO8+ serial card - alternate devices
1417 0 = /dev/cuw0 Callout device for ttyW0
1418 1 = /dev/cuw1 Callout device for ttyW1
1419 ...
1420 8 = /dev/cuw8 Callout device for ttyW8
1421 ...
1423 76 block Compaq Intelligent Drive Array, fifth controller
1424 0 = /dev/ida/c4d0 First logical drive whole disk
1425 16 = /dev/ida/c4d1 Second logical drive whole disk
1426 ...
1427 240 = /dev/ida/c4d15 16th logical drive whole disk
1429 Partitions are handled the same way as for Mylex
1430 DAC960 (see major number 48) except that the limit on
1431 partitions is 15.
1434 77 char ComScire Quantum Noise Generator
1435 0 = /dev/qng ComScire Quantum Noise Generator
1437 77 block Compaq Intelligent Drive Array, sixth controller
1438 0 = /dev/ida/c5d0 First logical drive whole disk
1439 16 = /dev/ida/c5d1 Second logical drive whole disk
1440 ...
1441 240 = /dev/ida/c5d15 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
1445 partitions is 15.
1447 78 char PAM Software's multimodem boards
1448 0 = /dev/ttyM0 First PAM modem
1449 1 = /dev/ttyM1 Second PAM modem
1450 ...
1452 78 block Compaq Intelligent Drive Array, seventh controller
1453 0 = /dev/ida/c6d0 First logical drive whole disk
1454 16 = /dev/ida/c6d1 Second logical drive whole disk
1455 ...
1456 240 = /dev/ida/c6d15 16th logical drive whole disk
1458 Partitions are handled the same way as for Mylex
1459 DAC960 (see major number 48) except that the limit on
1460 partitions is 15.
1462 79 char PAM Software's multimodem boards - alternate devices
1463 0 = /dev/cum0 Callout device for ttyM0
1464 1 = /dev/cum1 Callout device for ttyM1
1465 ...
1467 79 block Compaq Intelligent Drive Array, eighth controller
1468 0 = /dev/ida/c7d0 First logical drive whole disk
1469 16 = /dev/ida/c7d1 Second logical drive whole disk
1470 ...
1471 240 = /dev/ida/c715 16th logical drive whole disk
1473 Partitions are handled the same way as for Mylex
1474 DAC960 (see major number 48) except that the limit on
1475 partitions is 15.
1477 80 char Photometrics AT200 CCD camera
1478 0 = /dev/at200 Photometrics AT200 CCD camera
1480 80 block I2O hard disk
1481 0 = /dev/i2o/hda First I2O hard disk, whole disk
1482 16 = /dev/i2o/hdb Second I2O hard disk, whole disk
1483 ...
1484 240 = /dev/i2o/hdp 16th I2O hard disk, whole disk
1486 Partitions are handled in the same way as for IDE
1487 disks (see major number 3) except that the limit on
1488 partitions is 15.
1490 81 char video4linux
1491 0 = /dev/video0 Video capture/overlay device
1492 ...
1493 63 = /dev/video63 Video capture/overlay device
1494 64 = /dev/radio0 Radio device
1495 ...
1496 127 = /dev/radio63 Radio device
1497 224 = /dev/vbi0 Vertical blank interrupt
1498 ...
1499 255 = /dev/vbi31 Vertical blank interrupt
1501 81 block I2O hard disk
1502 0 = /dev/i2o/hdq 17th I2O hard disk, whole disk
1503 16 = /dev/i2o/hdr 18th I2O hard disk, whole disk
1504 ...
1505 240 = /dev/i2o/hdaf 32nd I2O hard disk, whole disk
1507 Partitions are handled in the same way as for IDE
1508 disks (see major number 3) except that the limit on
1509 partitions is 15.
1511 82 char WiNRADiO communications receiver card
1512 0 = /dev/winradio0 First WiNRADiO card
1513 1 = /dev/winradio1 Second WiNRADiO card
1514 ...
1516 The driver and documentation may be obtained from
1517 http://www.winradio.com/
1519 82 block I2O hard disk
1520 0 = /dev/i2o/hdag 33rd I2O hard disk, whole disk
1521 16 = /dev/i2o/hdah 34th I2O hard disk, whole disk
1522 ...
1523 240 = /dev/i2o/hdav 48th I2O hard disk, whole disk
1525 Partitions are handled in the same way as for IDE
1526 disks (see major number 3) except that the limit on
1527 partitions is 15.
1529 83 char Matrox mga_vid video driver
1530 0 = /dev/mga_vid0 1st video card
1531 1 = /dev/mga_vid1 2nd video card
1532 2 = /dev/mga_vid2 3rd video card
1533 ...
1534 15 = /dev/mga_vid15 16th video card
1536 83 block I2O hard disk
1537 0 = /dev/i2o/hdaw 49th I2O hard disk, whole disk
1538 16 = /dev/i2o/hdax 50th I2O hard disk, whole disk
1539 ...
1540 240 = /dev/i2o/hdbl 64th 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
1544 partitions is 15.
1546 84 char Ikon 1011[57] Versatec Greensheet Interface
1547 0 = /dev/ihcp0 First Greensheet port
1548 1 = /dev/ihcp1 Second Greensheet port
1550 84 block I2O hard disk
1551 0 = /dev/i2o/hdbm 65th I2O hard disk, whole disk
1552 16 = /dev/i2o/hdbn 66th I2O hard disk, whole disk
1553 ...
1554 240 = /dev/i2o/hdcb 80th I2O hard disk, whole disk
1556 Partitions are handled in the same way as for IDE
1557 disks (see major number 3) except that the limit on
1558 partitions is 15.
1560 85 char Linux/SGI shared memory input queue
1561 0 = /dev/shmiq Master shared input queue
1562 1 = /dev/qcntl0 First device pushed
1563 2 = /dev/qcntl1 Second device pushed
1564 ...
1566 85 block I2O hard disk
1567 0 = /dev/i2o/hdcc 81st I2O hard disk, whole disk
1568 16 = /dev/i2o/hdcd 82nd I2O hard disk, whole disk
1569 ...
1570 240 = /dev/i2o/hdcr 96th I2O hard disk, whole disk
1572 Partitions are handled in the same way as for IDE
1573 disks (see major number 3) except that the limit on
1574 partitions is 15.
1576 86 char SCSI media changer
1577 0 = /dev/sch0 First SCSI media changer
1578 1 = /dev/sch1 Second SCSI media changer
1579 ...
1581 86 block I2O hard disk
1582 0 = /dev/i2o/hdcs 97th I2O hard disk, whole disk
1583 16 = /dev/i2o/hdct 98th I2O hard disk, whole disk
1584 ...
1585 240 = /dev/i2o/hddh 112th I2O hard disk, whole disk
1587 Partitions are handled in the same way as for IDE
1588 disks (see major number 3) except that the limit on
1589 partitions is 15.
1591 87 char Sony Control-A1 stereo control bus
1592 0 = /dev/controla0 First device on chain
1593 1 = /dev/controla1 Second device on chain
1594 ...
1596 87 block I2O hard disk
1597 0 = /dev/i2o/hddi 113rd I2O hard disk, whole disk
1598 16 = /dev/i2o/hddj 114th I2O hard disk, whole disk
1599 ...
1600 240 = /dev/i2o/hddx 128th I2O hard disk, whole disk
1602 Partitions are handled in the same way as for IDE
1603 disks (see major number 3) except that the limit on
1604 partitions is 15.
1606 88 char COMX synchronous serial card
1607 0 = /dev/comx0 COMX channel 0
1608 1 = /dev/comx1 COMX channel 1
1609 ...
1611 88 block Seventh IDE hard disk/CD-ROM interface
1612 0 = /dev/hdm Master: whole disk (or CD-ROM)
1613 64 = /dev/hdn Slave: whole disk (or CD-ROM)
1615 Partitions are handled the same way as for the first
1616 interface (see major number 3).
1618 89 char I2C bus interface
1619 0 = /dev/i2c-0 First I2C adapter
1620 1 = /dev/i2c-1 Second I2C adapter
1621 ...
1623 89 block Eighth IDE hard disk/CD-ROM interface
1624 0 = /dev/hdo Master: whole disk (or CD-ROM)
1625 64 = /dev/hdp Slave: whole disk (or CD-ROM)
1627 Partitions are handled the same way as for the first
1628 interface (see major number 3).
1630 90 char Memory Technology Device (RAM, ROM, Flash)
1631 0 = /dev/mtd0 First MTD (rw)
1632 1 = /dev/mtdr0 First MTD (ro)
1633 ...
1634 30 = /dev/mtd15 16th MTD (rw)
1635 31 = /dev/mtdr15 16th MTD (ro)
1637 90 block Ninth IDE hard disk/CD-ROM interface
1638 0 = /dev/hdq Master: whole disk (or CD-ROM)
1639 64 = /dev/hdr Slave: whole disk (or CD-ROM)
1641 Partitions are handled the same way as for the first
1642 interface (see major number 3).
1644 91 char CAN-Bus devices
1645 0 = /dev/can0 First CAN-Bus controller
1646 1 = /dev/can1 Second CAN-Bus controller
1647 ...
1649 91 block Tenth IDE hard disk/CD-ROM interface
1650 0 = /dev/hds Master: whole disk (or CD-ROM)
1651 64 = /dev/hdt Slave: whole disk (or CD-ROM)
1653 Partitions are handled the same way as for the first
1654 interface (see major number 3).
1656 92 char Reserved for ith Kommunikationstechnik MIC ISDN card
1658 92 block PPDD encrypted disk driver
1659 0 = /dev/ppdd0 First encrypted disk
1660 1 = /dev/ppdd1 Second encrypted disk
1661 ...
1663 Partitions are handled in the same way as for IDE
1664 disks (see major number 3) except that the limit on
1665 partitions is 15.
1667 93 char
1669 93 block NAND Flash Translation Layer filesystem
1670 0 = /dev/nftla First NFTL layer
1671 16 = /dev/nftlb Second NFTL layer
1672 ...
1673 240 = /dev/nftlp 16th NTFL layer
1675 94 char
1677 94 block IBM S/390 DASD block storage
1678 0 = /dev/dasda First DASD device, major
1679 1 = /dev/dasda1 First DASD device, block 1
1680 2 = /dev/dasda2 First DASD device, block 2
1681 3 = /dev/dasda3 First DASD device, block 3
1682 4 = /dev/dasdb Second DASD device, major
1683 5 = /dev/dasdb1 Second DASD device, block 1
1684 6 = /dev/dasdb2 Second DASD device, block 2
1685 7 = /dev/dasdb3 Second DASD device, block 3
1686 ...
1688 95 char IP filter
1689 0 = /dev/ipl Filter control device/log file
1690 1 = /dev/ipnat NAT control device/log file
1691 2 = /dev/ipstate State information log file
1692 3 = /dev/ipauth Authentication control device/log file
1693 ...
1695 96 char Parallel port ATAPI tape devices
1696 0 = /dev/pt0 First parallel port ATAPI tape
1697 1 = /dev/pt1 Second parallel port ATAPI tape
1698 ...
1699 128 = /dev/npt0 First p.p. ATAPI tape, no rewind
1700 129 = /dev/npt1 Second p.p. ATAPI tape, no rewind
1701 ...
1703 96 block Inverse NAND Flash Translation Layer
1704 0 = /dev/inftla First INFTL layer
1705 16 = /dev/inftlb Second INFTL layer
1706 ...
1707 240 = /dev/inftlp 16th INTFL layer
1709 97 char Parallel port generic ATAPI interface
1710 0 = /dev/pg0 First parallel port ATAPI device
1711 1 = /dev/pg1 Second parallel port ATAPI device
1712 2 = /dev/pg2 Third parallel port ATAPI device
1713 3 = /dev/pg3 Fourth parallel port ATAPI device
1715 These devices support the same API as the generic SCSI
1716 devices.
1718 98 char Control and Measurement Device (comedi)
1719 0 = /dev/comedi0 First comedi device
1720 1 = /dev/comedi1 Second comedi device
1721 ...
1723 See http://stm.lbl.gov/comedi.
1725 98 block User-mode virtual block device
1726 0 = /dev/ubda First user-mode block device
1727 16 = /dev/udbb Second user-mode block device
1728 ...
1730 Partitions are handled in the same way as for IDE
1731 disks (see major number 3) except that the limit on
1732 partitions is 15.
1734 This device is used by the user-mode virtual kernel port.
1736 99 char Raw parallel ports
1737 0 = /dev/parport0 First parallel port
1738 1 = /dev/parport1 Second parallel port
1739 ...
1741 99 block JavaStation flash disk
1742 0 = /dev/jsfd JavaStation flash disk
1744 100 char Telephony for Linux
1745 0 = /dev/phone0 First telephony device
1746 1 = /dev/phone1 Second telephony device
1747 ...
1749 101 char Motorola DSP 56xxx board
1750 0 = /dev/mdspstat Status information
1751 1 = /dev/mdsp1 First DSP board I/O controls
1752 ...
1753 16 = /dev/mdsp16 16th DSP board I/O controls
1755 101 block AMI HyperDisk RAID controller
1756 0 = /dev/amiraid/ar0 First array whole disk
1757 16 = /dev/amiraid/ar1 Second array whole disk
1758 ...
1759 240 = /dev/amiraid/ar15 16th array whole disk
1761 For each device, partitions are added as:
1762 0 = /dev/amiraid/ar? Whole disk
1763 1 = /dev/amiraid/ar?p1 First partition
1764 2 = /dev/amiraid/ar?p2 Second partition
1765 ...
1766 15 = /dev/amiraid/ar?p15 15th partition
1768 102 char
1770 102 block Compressed block device
1771 0 = /dev/cbd/a First compressed block device, whole device
1772 16 = /dev/cbd/b Second compressed block device, whole device
1773 ...
1774 240 = /dev/cbd/p 16th compressed block device, whole device
1776 Partitions are handled in the same way as for IDE
1777 disks (see major number 3) except that the limit on
1778 partitions is 15.
1780 103 char Arla network file system
1781 0 = /dev/nnpfs0 First NNPFS device
1782 1 = /dev/nnpfs1 Second NNPFS device
1784 Arla is a free clone of the Andrew File System, AFS.
1785 The NNPFS device gives user mode filesystem
1786 implementations a kernel presence for caching and easy
1787 mounting. For more information about the project,
1788 write to <arla-drinkers@stacken.kth.se> or see
1789 http://www.stacken.kth.se/project/arla/
1791 103 block Audit device
1792 0 = /dev/audit Audit device
1794 104 char Flash BIOS support
1796 104 block Compaq Next Generation Drive Array, first controller
1797 0 = /dev/cciss/c0d0 First logical drive, whole disk
1798 16 = /dev/cciss/c0d1 Second logical drive, whole disk
1799 ...
1800 240 = /dev/cciss/c0d15 16th logical drive, whole disk
1802 Partitions are handled the same way as for Mylex
1803 DAC960 (see major number 48) except that the limit on
1804 partitions is 15.
1806 105 char Comtrol VS-1000 serial controller
1807 0 = /dev/ttyV0 First VS-1000 port
1808 1 = /dev/ttyV1 Second VS-1000 port
1809 ...
1811 105 block Compaq Next Generation Drive Array, second controller
1812 0 = /dev/cciss/c1d0 First logical drive, whole disk
1813 16 = /dev/cciss/c1d1 Second logical drive, whole disk
1814 ...
1815 240 = /dev/cciss/c1d15 16th logical drive, whole disk
1817 Partitions are handled the same way as for Mylex
1818 DAC960 (see major number 48) except that the limit on
1819 partitions is 15.
1821 106 char Comtrol VS-1000 serial controller - alternate devices
1822 0 = /dev/cuv0 First VS-1000 port
1823 1 = /dev/cuv1 Second VS-1000 port
1824 ...
1826 106 block Compaq Next Generation Drive Array, third controller
1827 0 = /dev/cciss/c2d0 First logical drive, whole disk
1828 16 = /dev/cciss/c2d1 Second logical drive, whole disk
1829 ...
1830 240 = /dev/cciss/c2d15 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
1834 partitions is 15.
1836 107 char 3Dfx Voodoo Graphics device
1837 0 = /dev/3dfx Primary 3Dfx graphics device
1839 107 block Compaq Next Generation Drive Array, fourth controller
1840 0 = /dev/cciss/c3d0 First logical drive, whole disk
1841 16 = /dev/cciss/c3d1 Second logical drive, whole disk
1842 ...
1843 240 = /dev/cciss/c3d15 16th logical drive, whole disk
1845 Partitions are handled the same way as for Mylex
1846 DAC960 (see major number 48) except that the limit on
1847 partitions is 15.
1849 108 char Device independent PPP interface
1850 0 = /dev/ppp Device independent PPP interface
1852 108 block Compaq Next Generation Drive Array, fifth controller
1853 0 = /dev/cciss/c4d0 First logical drive, whole disk
1854 16 = /dev/cciss/c4d1 Second logical drive, whole disk
1855 ...
1856 240 = /dev/cciss/c4d15 16th logical drive, whole disk
1858 Partitions are handled the same way as for Mylex
1859 DAC960 (see major number 48) except that the limit on
1860 partitions is 15.
1862 109 char Reserved for logical volume manager
1864 109 block Compaq Next Generation Drive Array, sixth controller
1865 0 = /dev/cciss/c5d0 First logical drive, whole disk
1866 16 = /dev/cciss/c5d1 Second logical drive, whole disk
1867 ...
1868 240 = /dev/cciss/c5d15 16th logical drive, whole disk
1870 Partitions are handled the same way as for Mylex
1871 DAC960 (see major number 48) except that the limit on
1872 partitions is 15.
1874 110 char miroMEDIA Surround board
1875 0 = /dev/srnd0 First miroMEDIA Surround board
1876 1 = /dev/srnd1 Second miroMEDIA Surround board
1877 ...
1879 110 block Compaq Next Generation Drive Array, seventh controller
1880 0 = /dev/cciss/c6d0 First logical drive, whole disk
1881 16 = /dev/cciss/c6d1 Second logical drive, whole disk
1882 ...
1883 240 = /dev/cciss/c6d15 16th logical drive, whole disk
1885 Partitions are handled the same way as for Mylex
1886 DAC960 (see major number 48) except that the limit on
1887 partitions is 15.
1889 111 char
1891 111 block Compaq Next Generation Drive Array, eighth controller
1892 0 = /dev/cciss/c7d0 First logical drive, whole disk
1893 16 = /dev/cciss/c7d1 Second logical drive, whole disk
1894 ...
1895 240 = /dev/cciss/c7d15 16th logical drive, whole disk
1897 Partitions are handled the same way as for Mylex
1898 DAC960 (see major number 48) except that the limit on
1899 partitions is 15.
1901 112 char ISI serial card
1902 0 = /dev/ttyM0 First ISI port
1903 1 = /dev/ttyM1 Second ISI port
1904 ...
1906 There is currently a device-naming conflict between
1907 these and PAM multimodems (major 78).
1909 112 block IBM iSeries virtual disk
1910 0 = /dev/iseries/vda First virtual disk, whole disk
1911 8 = /dev/iseries/vdb Second virtual disk, whole disk
1912 ...
1913 200 = /dev/iseries/vdz 26th virtual disk, whole disk
1914 208 = /dev/iseries/vdaa 27th virtual disk, whole disk
1915 ...
1916 248 = /dev/iseries/vdaf 32nd virtual disk, whole disk
1918 Partitions are handled in the same way as for IDE
1919 disks (see major number 3) except that the limit on
1920 partitions is 7.
1922 113 char ISI serial card - alternate devices
1923 0 = /dev/cum0 Callout device for ttyM0
1924 1 = /dev/cum1 Callout device for ttyM1
1925 ...
1927 113 block IBM iSeries virtual CD-ROM
1928 0 = /dev/iseries/vcda First virtual CD-ROM
1929 1 = /dev/iseries/vcdb Second virtual CD-ROM
1930 ...
1932 114 char Picture Elements ISE board
1933 0 = /dev/ise0 First ISE board
1934 1 = /dev/ise1 Second ISE board
1935 ...
1936 128 = /dev/isex0 Control node for first ISE board
1937 129 = /dev/isex1 Control node for second ISE board
1938 ...
1940 The ISE board is an embedded computer, optimized for
1941 image processing. The /dev/iseN nodes are the general
1942 I/O access to the board, the /dev/isex0 nodes command
1943 nodes used to control the board.
1945 114 block IDE BIOS powered software RAID interfaces such as the
1946 Promise Fastrak
1948 0 = /dev/ataraid/d0
1949 1 = /dev/ataraid/d0p1
1950 2 = /dev/ataraid/d0p2
1951 ...
1952 16 = /dev/ataraid/d1
1953 17 = /dev/ataraid/d1p1
1954 18 = /dev/ataraid/d1p2
1955 ...
1956 255 = /dev/ataraid/d15p15
1958 Partitions are handled in the same way as for IDE
1959 disks (see major number 3) except that the limit on
1960 partitions is 15.
1962 115 char TI link cable devices (115 was formerly the console driver speaker)
1963 0 = /dev/tipar0 Parallel cable on first parallel port
1964 ...
1965 7 = /dev/tipar7 Parallel cable on seventh parallel port
1967 8 = /dev/tiser0 Serial cable on first serial port
1968 ...
1969 15 = /dev/tiser7 Serial cable on seventh serial port
1971 16 = /dev/tiusb0 First USB cable
1972 ...
1973 47 = /dev/tiusb31 32nd USB cable
1975 115 block NetWare (NWFS) Devices (0-255)
1977 The NWFS (NetWare) devices are used to present a
1978 collection of NetWare Mirror Groups or NetWare
1979 Partitions as a logical storage segment for
1980 use in mounting NetWare volumes. A maximum of
1981 256 NetWare volumes can be supported in a single
1982 machine.
1984 http://cgfa.telepac.pt/ftp2/kernel.org/linux/kernel/people/jmerkey/nwfs/
1986 0 = /dev/nwfs/v0 First NetWare (NWFS) Logical Volume
1987 1 = /dev/nwfs/v1 Second NetWare (NWFS) Logical Volume
1988 2 = /dev/nwfs/v2 Third NetWare (NWFS) Logical Volume
1989 ...
1990 255 = /dev/nwfs/v255 Last NetWare (NWFS) Logical Volume
1992 116 char Advanced Linux Sound Driver (ALSA)
1994 116 block MicroMemory battery backed RAM adapter (NVRAM)
1995 Supports 16 boards, 15 partitions each.
1996 Requested by neilb at cse.unsw.edu.au.
1998 0 = /dev/umem/d0 Whole of first board
1999 1 = /dev/umem/d0p1 First partition of first board
2000 2 = /dev/umem/d0p2 Second partition of first board
2001 15 = /dev/umem/d0p15 15th partition of first board
2003 16 = /dev/umem/d1 Whole of second board
2004 17 = /dev/umem/d1p1 First partition of second board
2005 ...
2006 255= /dev/umem/d15p15 15th partition of 16th board.
2008 117 char COSA/SRP synchronous serial card
2009 0 = /dev/cosa0c0 1st board, 1st channel
2010 1 = /dev/cosa0c1 1st board, 2nd channel
2011 ...
2012 16 = /dev/cosa1c0 2nd board, 1st channel
2013 17 = /dev/cosa1c1 2nd board, 2nd channel
2014 ...
2016 117 block Enterprise Volume Management System (EVMS)
2018 The EVMS driver uses a layered, plug-in model to provide
2019 unparalleled flexibility and extensibility in managing
2020 storage. This allows for easy expansion or customization
2021 of various levels of volume management. Requested by
2022 Mark Peloquin (peloquin at us.ibm.com).
2024 Note: EVMS populates and manages all the devnodes in
2025 /dev/evms.
2027 http://sf.net/projects/evms
2029 0 = /dev/evms/block_device EVMS block device
2030 1 = /dev/evms/legacyname1 First EVMS legacy device
2031 2 = /dev/evms/legacyname2 Second EVMS legacy device
2032 ...
2033 Both ranges can grow (down or up) until they meet.
2034 ...
2035 254 = /dev/evms/EVMSname2 Second EVMS native device
2036 255 = /dev/evms/EVMSname1 First EVMS native device
2038 Note: legacyname(s) are derived from the normal legacy
2039 device names. For example, /dev/hda5 would become
2040 /dev/evms/hda5.
2042 118 char IBM Cryptographic Accelerator
2043 0 = /dev/ica Virtual interface to all IBM Crypto Accelerators
2044 1 = /dev/ica0 IBMCA Device 0
2045 2 = /dev/ica1 IBMCA Device 1
2046 ...
2048 119 char VMware virtual network control
2049 0 = /dev/vnet0 1st virtual network
2050 1 = /dev/vnet1 2nd virtual network
2051 ...
2053 120-127 char LOCAL/EXPERIMENTAL USE
2055 120-127 block LOCAL/EXPERIMENTAL USE
2056 Allocated for local/experimental use. For devices not
2057 assigned official numbers, these ranges should be
2058 used in order to avoid conflicting with future assignments.
2060 128-135 char Unix98 PTY masters
2062 These devices should not have corresponding device
2063 nodes; instead they should be accessed through the
2064 /dev/ptmx cloning interface.
2066 128 block SCSI disk devices (128-143)
2067 0 = /dev/sddy 129th SCSI disk whole disk
2068 16 = /dev/sddz 130th SCSI disk whole disk
2069 32 = /dev/sdea 131th SCSI disk whole disk
2070 ...
2071 240 = /dev/sden 144th SCSI disk whole disk
2073 Partitions are handled in the same way as for IDE
2074 disks (see major number 3) except that the limit on
2075 partitions is 15.
2077 129 block SCSI disk devices (144-159)
2078 0 = /dev/sdeo 145th SCSI disk whole disk
2079 16 = /dev/sdep 146th SCSI disk whole disk
2080 32 = /dev/sdeq 147th SCSI disk whole disk
2081 ...
2082 240 = /dev/sdfd 160th SCSI disk whole disk
2084 Partitions are handled in the same way as for IDE
2085 disks (see major number 3) except that the limit on
2086 partitions is 15.
2088 130 char (Misc devices)
2090 130 block SCSI disk devices (160-175)
2091 0 = /dev/sdfe 161st SCSI disk whole disk
2092 16 = /dev/sdff 162nd SCSI disk whole disk
2093 32 = /dev/sdfg 163rd SCSI disk whole disk
2094 ...
2095 240 = /dev/sdft 176th SCSI disk whole disk
2097 Partitions are handled in the same way as for IDE
2098 disks (see major number 3) except that the limit on
2099 partitions is 15.
2101 131 block SCSI disk devices (176-191)
2102 0 = /dev/sdfu 177th SCSI disk whole disk
2103 16 = /dev/sdfv 178th SCSI disk whole disk
2104 32 = /dev/sdfw 179th SCSI disk whole disk
2105 ...
2106 240 = /dev/sdgj 192nd SCSI disk whole disk
2108 Partitions are handled in the same way as for IDE
2109 disks (see major number 3) except that the limit on
2110 partitions is 15.
2112 132 block SCSI disk devices (192-207)
2113 0 = /dev/sdgk 193rd SCSI disk whole disk
2114 16 = /dev/sdgl 194th SCSI disk whole disk
2115 32 = /dev/sdgm 195th SCSI disk whole disk
2116 ...
2117 240 = /dev/sdgz 208th SCSI disk whole disk
2119 Partitions are handled in the same way as for IDE
2120 disks (see major number 3) except that the limit on
2121 partitions is 15.
2123 133 block SCSI disk devices (208-223)
2124 0 = /dev/sdha 209th SCSI disk whole disk
2125 16 = /dev/sdhb 210th SCSI disk whole disk
2126 32 = /dev/sdhc 211th SCSI disk whole disk
2127 ...
2128 240 = /dev/sdhp 224th 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
2132 partitions is 15.
2134 134 block SCSI disk devices (224-239)
2135 0 = /dev/sdhq 225th SCSI disk whole disk
2136 16 = /dev/sdhr 226th SCSI disk whole disk
2137 32 = /dev/sdhs 227th SCSI disk whole disk
2138 ...
2139 240 = /dev/sdif 240th 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
2143 partitions is 15.
2145 135 block SCSI disk devices (240-255)
2146 0 = /dev/sdig 241st SCSI disk whole disk
2147 16 = /dev/sdih 242nd SCSI disk whole disk
2148 32 = /dev/sdih 243rd SCSI disk whole disk
2149 ...
2150 240 = /dev/sdiv 256th 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
2154 partitions is 15.
2156 136-143 char Unix98 PTY slaves
2157 0 = /dev/pts/0 First Unix98 pseudo-TTY
2158 1 = /dev/pts/1 Second Unix98 pseudo-TTY
2159 ...
2161 These device nodes are automatically generated with
2162 the proper permissions and modes by mounting the
2163 devpts filesystem onto /dev/pts with the appropriate
2164 mount options (distribution dependent, however, on
2165 *most* distributions the appropriate options are
2166 "mode=0620,gid=<gid of the "tty" group>".)
2168 136 block Mylex DAC960 PCI RAID controller; ninth controller
2169 0 = /dev/rd/c8d0 First disk, whole disk
2170 8 = /dev/rd/c8d1 Second disk, whole disk
2171 ...
2172 248 = /dev/rd/c8d31 32nd disk, whole disk
2174 Partitions are handled as for major 48.
2176 137 block Mylex DAC960 PCI RAID controller; tenth controller
2177 0 = /dev/rd/c9d0 First disk, whole disk
2178 8 = /dev/rd/c9d1 Second disk, whole disk
2179 ...
2180 248 = /dev/rd/c9d31 32nd disk, whole disk
2182 Partitions are handled as for major 48.
2184 138 block Mylex DAC960 PCI RAID controller; eleventh controller
2185 0 = /dev/rd/c10d0 First disk, whole disk
2186 8 = /dev/rd/c10d1 Second disk, whole disk
2187 ...
2188 248 = /dev/rd/c10d31 32nd disk, whole disk
2190 Partitions are handled as for major 48.
2192 139 block Mylex DAC960 PCI RAID controller; twelfth controller
2193 0 = /dev/rd/c11d0 First disk, whole disk
2194 8 = /dev/rd/c11d1 Second disk, whole disk
2195 ...
2196 248 = /dev/rd/c11d31 32nd disk, whole disk
2198 Partitions are handled as for major 48.
2200 140 block Mylex DAC960 PCI RAID controller; thirteenth controller
2201 0 = /dev/rd/c12d0 First disk, whole disk
2202 8 = /dev/rd/c12d1 Second disk, whole disk
2203 ...
2204 248 = /dev/rd/c12d31 32nd disk, whole disk
2206 Partitions are handled as for major 48.
2208 141 block Mylex DAC960 PCI RAID controller; fourteenth controller
2209 0 = /dev/rd/c13d0 First disk, whole disk
2210 8 = /dev/rd/c13d1 Second disk, whole disk
2211 ...
2212 248 = /dev/rd/c13d31 32nd disk, whole disk
2214 Partitions are handled as for major 48.
2216 142 block Mylex DAC960 PCI RAID controller; fifteenth controller
2217 0 = /dev/rd/c14d0 First disk, whole disk
2218 8 = /dev/rd/c14d1 Second disk, whole disk
2219 ...
2220 248 = /dev/rd/c14d31 32nd disk, whole disk
2222 Partitions are handled as for major 48.
2224 143 block Mylex DAC960 PCI RAID controller; sixteenth controller
2225 0 = /dev/rd/c15d0 First disk, whole disk
2226 8 = /dev/rd/c15d1 Second disk, whole disk
2227 ...
2228 248 = /dev/rd/c15d31 32nd disk, whole disk
2230 Partitions are handled as for major 48.
2232 144 char Encapsulated PPP
2233 0 = /dev/pppox0 First PPP over Ethernet
2234 ...
2235 63 = /dev/pppox63 64th PPP over Ethernet
2237 This is primarily used for ADSL.
2239 The SST 5136-DN DeviceNet interface driver has been
2240 relocated to major 183 due to an unfortunate conflict.
2242 144 block Expansion Area #1 for more non-device (e.g. NFS) mounts
2243 0 = mounted device 256
2244 255 = mounted device 511
2246 145 char SAM9407-based soundcard
2247 0 = /dev/sam0_mixer
2248 1 = /dev/sam0_sequencer
2249 2 = /dev/sam0_midi00
2250 3 = /dev/sam0_dsp
2251 4 = /dev/sam0_audio
2252 6 = /dev/sam0_sndstat
2253 18 = /dev/sam0_midi01
2254 34 = /dev/sam0_midi02
2255 50 = /dev/sam0_midi03
2256 64 = /dev/sam1_mixer
2257 ...
2258 128 = /dev/sam2_mixer
2259 ...
2260 192 = /dev/sam3_mixer
2261 ...
2263 Device functions match OSS, but offer a number of
2264 addons, which are sam9407 specific. OSS can be
2265 operated simultaneously, taking care of the codec.
2267 145 block Expansion Area #2 for more non-device (e.g. NFS) mounts
2268 0 = mounted device 512
2269 255 = mounted device 767
2271 146 char SYSTRAM SCRAMNet mirrored-memory network
2272 0 = /dev/scramnet0 First SCRAMNet device
2273 1 = /dev/scramnet1 Second SCRAMNet device
2274 ...
2276 146 block Expansion Area #3 for more non-device (e.g. NFS) mounts
2277 0 = mounted device 768
2278 255 = mounted device 1023
2280 147 char Aureal Semiconductor Vortex Audio device
2281 0 = /dev/aureal0 First Aureal Vortex
2282 1 = /dev/aureal1 Second Aureal Vortex
2283 ...
2285 147 block Distributed Replicated Block Device (DRBD)
2286 0 = /dev/drbd0 First DRBD device
2287 1 = /dev/drbd1 Second DRBD device
2288 ...
2290 148 char Technology Concepts serial card
2291 0 = /dev/ttyT0 First TCL port
2292 1 = /dev/ttyT1 Second TCL port
2293 ...
2295 149 char Technology Concepts serial card - alternate devices
2296 0 = /dev/cut0 Callout device for ttyT0
2297 1 = /dev/cut0 Callout device for ttyT1
2298 ...
2300 150 char Real-Time Linux FIFOs
2301 0 = /dev/rtf0 First RTLinux FIFO
2302 1 = /dev/rtf1 Second RTLinux FIFO
2303 ...
2305 151 char DPT I2O SmartRaid V controller
2306 0 = /dev/dpti0 First DPT I2O adapter
2307 1 = /dev/dpti1 Second DPT I2O adapter
2308 ...
2310 152 char EtherDrive Control Device
2311 0 = /dev/etherd/ctl Connect/Disconnect an EtherDrive
2312 1 = /dev/etherd/err Monitor errors
2313 2 = /dev/etherd/raw Raw AoE packet monitor
2315 152 block EtherDrive Block Devices
2316 0 = /dev/etherd/0 EtherDrive 0
2317 ...
2318 255 = /dev/etherd/255 EtherDrive 255
2320 153 char SPI Bus Interface (sometimes referred to as MicroWire)
2321 0 = /dev/spi0 First SPI device on the bus
2322 1 = /dev/spi1 Second SPI device on the bus
2323 ...
2324 15 = /dev/spi15 Sixteenth SPI device on the bus
2326 153 block Enhanced Metadisk RAID (EMD) storage units
2327 0 = /dev/emd/0 First unit
2328 1 = /dev/emd/0p1 Partition 1 on First unit
2329 2 = /dev/emd/0p2 Partition 2 on First unit
2330 ...
2331 15 = /dev/emd/0p15 Partition 15 on First unit
2333 16 = /dev/emd/1 Second unit
2334 32 = /dev/emd/2 Third unit
2335 ...
2336 240 = /dev/emd/15 Sixteenth unit
2338 Partitions are handled in the same way as for IDE
2339 disks (see major number 3) except that the limit on
2340 partitions is 15.
2342 154 char Specialix RIO serial card
2343 0 = /dev/ttySR0 First RIO port
2344 ...
2345 255 = /dev/ttySR255 256th RIO port
2347 155 char Specialix RIO serial card - alternate devices
2348 0 = /dev/cusr0 Callout device for ttySR0
2349 ...
2350 255 = /dev/cusr255 Callout device for ttySR255
2352 156 char Specialix RIO serial card
2353 0 = /dev/ttySR256 257th RIO port
2354 ...
2355 255 = /dev/ttySR511 512th RIO port
2357 157 char Specialix RIO serial card - alternate devices
2358 0 = /dev/cusr256 Callout device for ttySR256
2359 ...
2360 255 = /dev/cusr511 Callout device for ttySR511
2362 158 char Dialogic GammaLink fax driver
2363 0 = /dev/gfax0 GammaLink channel 0
2364 1 = /dev/gfax1 GammaLink channel 1
2365 ...
2367 159 char RESERVED
2369 159 block RESERVED
2371 160 char General Purpose Instrument Bus (GPIB)
2372 0 = /dev/gpib0 First GPIB bus
2373 1 = /dev/gpib1 Second GPIB bus
2374 ...
2376 160 block Carmel 8-port SATA Disks on First Controller
2377 0 = /dev/carmel/0 SATA disk 0 whole disk
2378 1 = /dev/carmel/0p1 SATA disk 0 partition 1
2379 ...
2380 31 = /dev/carmel/0p31 SATA disk 0 partition 31
2382 32 = /dev/carmel/1 SATA disk 1 whole disk
2383 64 = /dev/carmel/2 SATA disk 2 whole disk
2384 ...
2385 224 = /dev/carmel/7 SATA disk 7 whole disk
2387 Partitions are handled in the same way as for IDE
2388 disks (see major number 3) except that the limit on
2389 partitions is 31.
2391 161 char IrCOMM devices (IrDA serial/parallel emulation)
2392 0 = /dev/ircomm0 First IrCOMM device
2393 1 = /dev/ircomm1 Second IrCOMM device
2394 ...
2395 16 = /dev/irlpt0 First IrLPT device
2396 17 = /dev/irlpt1 Second IrLPT device
2397 ...
2399 161 block Carmel 8-port SATA Disks on Second Controller
2400 0 = /dev/carmel/8 SATA disk 8 whole disk
2401 1 = /dev/carmel/8p1 SATA disk 8 partition 1
2402 ...
2403 31 = /dev/carmel/8p31 SATA disk 8 partition 31
2405 32 = /dev/carmel/9 SATA disk 9 whole disk
2406 64 = /dev/carmel/10 SATA disk 10 whole disk
2407 ...
2408 224 = /dev/carmel/15 SATA disk 15 whole disk
2410 Partitions are handled in the same way as for IDE
2411 disks (see major number 3) except that the limit on
2412 partitions is 31.
2414 162 char Raw block device interface
2415 0 = /dev/rawctl Raw I/O control device
2416 1 = /dev/raw/raw1 First raw I/O device
2417 2 = /dev/raw/raw2 Second raw I/O device
2418 ...
2419 max minor number of raw device is set by kernel config
2420 MAX_RAW_DEVS or raw module parameter 'max_raw_devs'
2422 163 char
2424 164 char Chase Research AT/PCI-Fast serial card
2425 0 = /dev/ttyCH0 AT/PCI-Fast board 0, port 0
2426 ...
2427 15 = /dev/ttyCH15 AT/PCI-Fast board 0, port 15
2428 16 = /dev/ttyCH16 AT/PCI-Fast board 1, port 0
2429 ...
2430 31 = /dev/ttyCH31 AT/PCI-Fast board 1, port 15
2431 32 = /dev/ttyCH32 AT/PCI-Fast board 2, port 0
2432 ...
2433 47 = /dev/ttyCH47 AT/PCI-Fast board 2, port 15
2434 48 = /dev/ttyCH48 AT/PCI-Fast board 3, port 0
2435 ...
2436 63 = /dev/ttyCH63 AT/PCI-Fast board 3, port 15
2438 165 char Chase Research AT/PCI-Fast serial card - alternate devices
2439 0 = /dev/cuch0 Callout device for ttyCH0
2440 ...
2441 63 = /dev/cuch63 Callout device for ttyCH63
2443 166 char ACM USB modems
2444 0 = /dev/ttyACM0 First ACM modem
2445 1 = /dev/ttyACM1 Second ACM modem
2446 ...
2448 167 char ACM USB modems - alternate devices
2449 0 = /dev/cuacm0 Callout device for ttyACM0
2450 1 = /dev/cuacm1 Callout device for ttyACM1
2451 ...
2453 168 char Eracom CSA7000 PCI encryption adaptor
2454 0 = /dev/ecsa0 First CSA7000
2455 1 = /dev/ecsa1 Second CSA7000
2456 ...
2458 169 char Eracom CSA8000 PCI encryption adaptor
2459 0 = /dev/ecsa8-0 First CSA8000
2460 1 = /dev/ecsa8-1 Second CSA8000
2461 ...
2463 170 char AMI MegaRAC remote access controller
2464 0 = /dev/megarac0 First MegaRAC card
2465 1 = /dev/megarac1 Second MegaRAC card
2466 ...
2468 171 char Reserved for IEEE 1394 (Firewire)
2470 172 char Moxa Intellio serial card
2471 0 = /dev/ttyMX0 First Moxa port
2472 1 = /dev/ttyMX1 Second Moxa port
2473 ...
2474 127 = /dev/ttyMX127 128th Moxa port
2475 128 = /dev/moxactl Moxa control port
2477 173 char Moxa Intellio serial card - alternate devices
2478 0 = /dev/cumx0 Callout device for ttyMX0
2479 1 = /dev/cumx1 Callout device for ttyMX1
2480 ...
2481 127 = /dev/cumx127 Callout device for ttyMX127
2483 174 char SmartIO serial card
2484 0 = /dev/ttySI0 First SmartIO port
2485 1 = /dev/ttySI1 Second SmartIO port
2486 ...
2488 175 char SmartIO serial card - alternate devices
2489 0 = /dev/cusi0 Callout device for ttySI0
2490 1 = /dev/cusi1 Callout device for ttySI1
2491 ...
2493 176 char nCipher nFast PCI crypto accelerator
2494 0 = /dev/nfastpci0 First nFast PCI device
2495 1 = /dev/nfastpci1 First nFast PCI device
2496 ...
2498 177 char TI PCILynx memory spaces
2499 0 = /dev/pcilynx/aux0 AUX space of first PCILynx card
2500 ...
2501 15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
2502 16 = /dev/pcilynx/rom0 ROM space of first PCILynx card
2503 ...
2504 31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
2505 32 = /dev/pcilynx/ram0 RAM space of first PCILynx card
2506 ...
2507 47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
2509 178 char Giganet cLAN1xxx virtual interface adapter
2510 0 = /dev/clanvi0 First cLAN adapter
2511 1 = /dev/clanvi1 Second cLAN adapter
2512 ...
2514 179 block MMC block devices
2515 0 = /dev/mmcblk0 First SD/MMC card
2516 1 = /dev/mmcblk0p1 First partition on first MMC card
2517 8 = /dev/mmcblk1 Second SD/MMC card
2518 ...
2520 The start of next SD/MMC card can be configured with
2521 CONFIG_MMC_BLOCK_MINORS, or overridden at boot/modprobe
2522 time using the mmcblk.perdev_minors option. That would
2523 bump the offset between each card to be the configured
2524 value instead of the default 8.
2526 179 char CCube DVXChip-based PCI products
2527 0 = /dev/dvxirq0 First DVX device
2528 1 = /dev/dvxirq1 Second DVX device
2529 ...
2531 180 char USB devices
2532 0 = /dev/usb/lp0 First USB printer
2533 ...
2534 15 = /dev/usb/lp15 16th USB printer
2535 48 = /dev/usb/scanner0 First USB scanner
2536 ...
2537 63 = /dev/usb/scanner15 16th USB scanner
2538 64 = /dev/usb/rio500 Diamond Rio 500
2539 65 = /dev/usb/usblcd USBLCD Interface (info@usblcd.de)
2540 66 = /dev/usb/cpad0 Synaptics cPad (mouse/LCD)
2541 96 = /dev/usb/hiddev0 1st USB HID device
2542 ...
2543 111 = /dev/usb/hiddev15 16th USB HID device
2544 112 = /dev/usb/auer0 1st auerswald ISDN device
2545 ...
2546 127 = /dev/usb/auer15 16th auerswald ISDN device
2547 128 = /dev/usb/brlvgr0 First Braille Voyager device
2548 ...
2549 131 = /dev/usb/brlvgr3 Fourth Braille Voyager device
2550 132 = /dev/usb/idmouse ID Mouse (fingerprint scanner) device
2551 133 = /dev/usb/sisusbvga1 First SiSUSB VGA device
2552 ...
2553 140 = /dev/usb/sisusbvga8 Eighth SISUSB VGA device
2554 144 = /dev/usb/lcd USB LCD device
2555 160 = /dev/usb/legousbtower0 1st USB Legotower device
2556 ...
2557 175 = /dev/usb/legousbtower15 16th USB Legotower device
2558 176 = /dev/usb/usbtmc1 First USB TMC device
2559 ...
2560 191 = /dev/usb/usbtmc16 16th USB TMC device
2561 192 = /dev/usb/yurex1 First USB Yurex device
2562 ...
2563 209 = /dev/usb/yurex16 16th USB Yurex device
2564 240 = /dev/usb/dabusb0 First daubusb device
2565 ...
2566 243 = /dev/usb/dabusb3 Fourth dabusb device
2568 180 block USB block devices
2569 0 = /dev/uba First USB block device
2570 8 = /dev/ubb Second USB block device
2571 16 = /dev/ubc Third USB block device
2572 ...
2574 181 char Conrad Electronic parallel port radio clocks
2575 0 = /dev/pcfclock0 First Conrad radio clock
2576 1 = /dev/pcfclock1 Second Conrad radio clock
2577 ...
2579 182 char Picture Elements THR2 binarizer
2580 0 = /dev/pethr0 First THR2 board
2581 1 = /dev/pethr1 Second THR2 board
2582 ...
2584 183 char SST 5136-DN DeviceNet interface
2585 0 = /dev/ss5136dn0 First DeviceNet interface
2586 1 = /dev/ss5136dn1 Second DeviceNet interface
2587 ...
2589 This device used to be assigned to major number 144.
2590 It had to be moved due to an unfortunate conflict.
2592 184 char Picture Elements' video simulator/sender
2593 0 = /dev/pevss0 First sender board
2594 1 = /dev/pevss1 Second sender board
2595 ...
2597 185 char InterMezzo high availability file system
2598 0 = /dev/intermezzo0 First cache manager
2599 1 = /dev/intermezzo1 Second cache manager
2600 ...
2602 See http://web.archive.org/web/20080115195241/
2603 http://inter-mezzo.org/index.html
2605 186 char Object-based storage control device
2606 0 = /dev/obd0 First obd control device
2607 1 = /dev/obd1 Second obd control device
2608 ...
2610 See ftp://ftp.lustre.org/pub/obd for code and information.
2612 187 char DESkey hardware encryption device
2613 0 = /dev/deskey0 First DES key
2614 1 = /dev/deskey1 Second DES key
2615 ...
2617 188 char USB serial converters
2618 0 = /dev/ttyUSB0 First USB serial converter
2619 1 = /dev/ttyUSB1 Second USB serial converter
2620 ...
2622 189 char USB serial converters - alternate devices
2623 0 = /dev/cuusb0 Callout device for ttyUSB0
2624 1 = /dev/cuusb1 Callout device for ttyUSB1
2625 ...
2627 190 char Kansas City tracker/tuner card
2628 0 = /dev/kctt0 First KCT/T card
2629 1 = /dev/kctt1 Second KCT/T card
2630 ...
2632 191 char Reserved for PCMCIA
2634 192 char Kernel profiling interface
2635 0 = /dev/profile Profiling control device
2636 1 = /dev/profile0 Profiling device for CPU 0
2637 2 = /dev/profile1 Profiling device for CPU 1
2638 ...
2640 193 char Kernel event-tracing interface
2641 0 = /dev/trace Tracing control device
2642 1 = /dev/trace0 Tracing device for CPU 0
2643 2 = /dev/trace1 Tracing device for CPU 1
2644 ...
2646 194 char linVideoStreams (LINVS)
2647 0 = /dev/mvideo/status0 Video compression status
2648 1 = /dev/mvideo/stream0 Video stream
2649 2 = /dev/mvideo/frame0 Single compressed frame
2650 3 = /dev/mvideo/rawframe0 Raw uncompressed frame
2651 4 = /dev/mvideo/codec0 Direct codec access
2652 5 = /dev/mvideo/video4linux0 Video4Linux compatibility
2654 16 = /dev/mvideo/status1 Second device
2655 ...
2656 32 = /dev/mvideo/status2 Third device
2657 ...
2658 ...
2659 240 = /dev/mvideo/status15 16th device
2660 ...
2662 195 char Nvidia graphics devices
2663 0 = /dev/nvidia0 First Nvidia card
2664 1 = /dev/nvidia1 Second Nvidia card
2665 ...
2666 255 = /dev/nvidiactl Nvidia card control device
2668 196 char Tormenta T1 card
2669 0 = /dev/tor/0 Master control channel for all cards
2670 1 = /dev/tor/1 First DS0
2671 2 = /dev/tor/2 Second DS0
2672 ...
2673 48 = /dev/tor/48 48th DS0
2674 49 = /dev/tor/49 First pseudo-channel
2675 50 = /dev/tor/50 Second pseudo-channel
2676 ...
2678 197 char OpenTNF tracing facility
2679 0 = /dev/tnf/t0 Trace 0 data extraction
2680 1 = /dev/tnf/t1 Trace 1 data extraction
2681 ...
2682 128 = /dev/tnf/status Tracing facility status
2683 130 = /dev/tnf/trace Tracing device
2685 198 char Total Impact TPMP2 quad coprocessor PCI card
2686 0 = /dev/tpmp2/0 First card
2687 1 = /dev/tpmp2/1 Second card
2688 ...
2690 199 char Veritas volume manager (VxVM) volumes
2691 0 = /dev/vx/rdsk/*/* First volume
2692 1 = /dev/vx/rdsk/*/* Second volume
2693 ...
2695 199 block Veritas volume manager (VxVM) volumes
2696 0 = /dev/vx/dsk/*/* First volume
2697 1 = /dev/vx/dsk/*/* Second volume
2698 ...
2700 The namespace in these directories is maintained by
2701 the user space VxVM software.
2703 200 char Veritas VxVM configuration interface
2704 0 = /dev/vx/config Configuration access node
2705 1 = /dev/vx/trace Volume i/o trace access node
2706 2 = /dev/vx/iod Volume i/o daemon access node
2707 3 = /dev/vx/info Volume information access node
2708 4 = /dev/vx/task Volume tasks access node
2709 5 = /dev/vx/taskmon Volume tasks monitor daemon
2711 201 char Veritas VxVM dynamic multipathing driver
2712 0 = /dev/vx/rdmp/* First multipath device
2713 1 = /dev/vx/rdmp/* Second multipath device
2714 ...
2715 201 block Veritas VxVM dynamic multipathing driver
2716 0 = /dev/vx/dmp/* First multipath device
2717 1 = /dev/vx/dmp/* Second multipath device
2718 ...
2720 The namespace in these directories is maintained by
2721 the user space VxVM software.
2723 202 char CPU model-specific registers
2724 0 = /dev/cpu/0/msr MSRs on CPU 0
2725 1 = /dev/cpu/1/msr MSRs on CPU 1
2726 ...
2728 202 block Xen Virtual Block Device
2729 0 = /dev/xvda First Xen VBD whole disk
2730 16 = /dev/xvdb Second Xen VBD whole disk
2731 32 = /dev/xvdc Third Xen VBD whole disk
2732 ...
2733 240 = /dev/xvdp Sixteenth Xen VBD whole disk
2735 Partitions are handled in the same way as for IDE
2736 disks (see major number 3) except that the limit on
2737 partitions is 15.
2739 203 char CPU CPUID information
2740 0 = /dev/cpu/0/cpuid CPUID on CPU 0
2741 1 = /dev/cpu/1/cpuid CPUID on CPU 1
2742 ...
2744 204 char Low-density serial ports
2745 0 = /dev/ttyLU0 LinkUp Systems L72xx UART - port 0
2746 1 = /dev/ttyLU1 LinkUp Systems L72xx UART - port 1
2747 2 = /dev/ttyLU2 LinkUp Systems L72xx UART - port 2
2748 3 = /dev/ttyLU3 LinkUp Systems L72xx UART - port 3
2749 4 = /dev/ttyFB0 Intel Footbridge (ARM)
2750 5 = /dev/ttySA0 StrongARM builtin serial port 0
2751 6 = /dev/ttySA1 StrongARM builtin serial port 1
2752 7 = /dev/ttySA2 StrongARM builtin serial port 2
2753 8 = /dev/ttySC0 SCI serial port (SuperH) - port 0
2754 9 = /dev/ttySC1 SCI serial port (SuperH) - port 1
2755 10 = /dev/ttySC2 SCI serial port (SuperH) - port 2
2756 11 = /dev/ttySC3 SCI serial port (SuperH) - port 3
2757 12 = /dev/ttyFW0 Firmware console - port 0
2758 13 = /dev/ttyFW1 Firmware console - port 1
2759 14 = /dev/ttyFW2 Firmware console - port 2
2760 15 = /dev/ttyFW3 Firmware console - port 3
2761 16 = /dev/ttyAM0 ARM "AMBA" serial port 0
2762 ...
2763 31 = /dev/ttyAM15 ARM "AMBA" serial port 15
2764 32 = /dev/ttyDB0 DataBooster serial port 0
2765 ...
2766 39 = /dev/ttyDB7 DataBooster serial port 7
2767 40 = /dev/ttySG0 SGI Altix console port
2768 41 = /dev/ttySMX0 Motorola i.MX - port 0
2769 42 = /dev/ttySMX1 Motorola i.MX - port 1
2770 43 = /dev/ttySMX2 Motorola i.MX - port 2
2771 44 = /dev/ttyMM0 Marvell MPSC - port 0
2772 45 = /dev/ttyMM1 Marvell MPSC - port 1
2773 46 = /dev/ttyCPM0 PPC CPM (SCC or SMC) - port 0
2774 ...
2775 47 = /dev/ttyCPM5 PPC CPM (SCC or SMC) - port 5
2776 50 = /dev/ttyIOC0 Altix serial card
2777 ...
2778 81 = /dev/ttyIOC31 Altix serial card
2779 82 = /dev/ttyVR0 NEC VR4100 series SIU
2780 83 = /dev/ttyVR1 NEC VR4100 series DSIU
2781 84 = /dev/ttyIOC84 Altix ioc4 serial card
2782 ...
2783 115 = /dev/ttyIOC115 Altix ioc4 serial card
2784 116 = /dev/ttySIOC0 Altix ioc3 serial card
2785 ...
2786 147 = /dev/ttySIOC31 Altix ioc3 serial card
2787 148 = /dev/ttyPSC0 PPC PSC - port 0
2788 ...
2789 153 = /dev/ttyPSC5 PPC PSC - port 5
2790 154 = /dev/ttyAT0 ATMEL serial port 0
2791 ...
2792 169 = /dev/ttyAT15 ATMEL serial port 15
2793 170 = /dev/ttyNX0 Hilscher netX serial port 0
2794 ...
2795 185 = /dev/ttyNX15 Hilscher netX serial port 15
2796 186 = /dev/ttyJ0 JTAG1 DCC protocol based serial port emulation
2797 187 = /dev/ttyUL0 Xilinx uartlite - port 0
2798 ...
2799 190 = /dev/ttyUL3 Xilinx uartlite - port 3
2800 191 = /dev/xvc0 Xen virtual console - port 0
2801 192 = /dev/ttyPZ0 pmac_zilog - port 0
2802 ...
2803 195 = /dev/ttyPZ3 pmac_zilog - port 3
2804 196 = /dev/ttyTX0 TX39/49 serial port 0
2805 ...
2806 204 = /dev/ttyTX7 TX39/49 serial port 7
2807 205 = /dev/ttySC0 SC26xx serial port 0
2808 206 = /dev/ttySC1 SC26xx serial port 1
2809 207 = /dev/ttySC2 SC26xx serial port 2
2810 208 = /dev/ttySC3 SC26xx serial port 3
2811 209 = /dev/ttyMAX0 MAX3100 serial port 0
2812 210 = /dev/ttyMAX1 MAX3100 serial port 1
2813 211 = /dev/ttyMAX2 MAX3100 serial port 2
2814 212 = /dev/ttyMAX3 MAX3100 serial port 3
2816 205 char Low-density serial ports (alternate device)
2817 0 = /dev/culu0 Callout device for ttyLU0
2818 1 = /dev/culu1 Callout device for ttyLU1
2819 2 = /dev/culu2 Callout device for ttyLU2
2820 3 = /dev/culu3 Callout device for ttyLU3
2821 4 = /dev/cufb0 Callout device for ttyFB0
2822 5 = /dev/cusa0 Callout device for ttySA0
2823 6 = /dev/cusa1 Callout device for ttySA1
2824 7 = /dev/cusa2 Callout device for ttySA2
2825 8 = /dev/cusc0 Callout device for ttySC0
2826 9 = /dev/cusc1 Callout device for ttySC1
2827 10 = /dev/cusc2 Callout device for ttySC2
2828 11 = /dev/cusc3 Callout device for ttySC3
2829 12 = /dev/cufw0 Callout device for ttyFW0
2830 13 = /dev/cufw1 Callout device for ttyFW1
2831 14 = /dev/cufw2 Callout device for ttyFW2
2832 15 = /dev/cufw3 Callout device for ttyFW3
2833 16 = /dev/cuam0 Callout device for ttyAM0
2834 ...
2835 31 = /dev/cuam15 Callout device for ttyAM15
2836 32 = /dev/cudb0 Callout device for ttyDB0
2837 ...
2838 39 = /dev/cudb7 Callout device for ttyDB7
2839 40 = /dev/cusg0 Callout device for ttySG0
2840 41 = /dev/ttycusmx0 Callout device for ttySMX0
2841 42 = /dev/ttycusmx1 Callout device for ttySMX1
2842 43 = /dev/ttycusmx2 Callout device for ttySMX2
2843 46 = /dev/cucpm0 Callout device for ttyCPM0
2844 ...
2845 49 = /dev/cucpm5 Callout device for ttyCPM5
2846 50 = /dev/cuioc40 Callout device for ttyIOC40
2847 ...
2848 81 = /dev/cuioc431 Callout device for ttyIOC431
2849 82 = /dev/cuvr0 Callout device for ttyVR0
2850 83 = /dev/cuvr1 Callout device for ttyVR1
2852 206 char OnStream SC-x0 tape devices
2853 0 = /dev/osst0 First OnStream SCSI tape, mode 0
2854 1 = /dev/osst1 Second OnStream SCSI tape, mode 0
2855 ...
2856 32 = /dev/osst0l First OnStream SCSI tape, mode 1
2857 33 = /dev/osst1l Second OnStream SCSI tape, mode 1
2858 ...
2859 64 = /dev/osst0m First OnStream SCSI tape, mode 2
2860 65 = /dev/osst1m Second OnStream SCSI tape, mode 2
2861 ...
2862 96 = /dev/osst0a First OnStream SCSI tape, mode 3
2863 97 = /dev/osst1a Second OnStream SCSI tape, mode 3
2864 ...
2865 128 = /dev/nosst0 No rewind version of /dev/osst0
2866 129 = /dev/nosst1 No rewind version of /dev/osst1
2867 ...
2868 160 = /dev/nosst0l No rewind version of /dev/osst0l
2869 161 = /dev/nosst1l No rewind version of /dev/osst1l
2870 ...
2871 192 = /dev/nosst0m No rewind version of /dev/osst0m
2872 193 = /dev/nosst1m No rewind version of /dev/osst1m
2873 ...
2874 224 = /dev/nosst0a No rewind version of /dev/osst0a
2875 225 = /dev/nosst1a No rewind version of /dev/osst1a
2876 ...
2878 The OnStream SC-x0 SCSI tapes do not support the
2879 standard SCSI SASD command set and therefore need
2880 their own driver "osst". Note that the IDE, USB (and
2881 maybe ParPort) versions may be driven via ide-scsi or
2882 usb-storage SCSI emulation and this osst device and
2883 driver as well. The ADR-x0 drives are QIC-157
2884 compliant and don't need osst.
2886 207 char Compaq ProLiant health feature indicate
2887 0 = /dev/cpqhealth/cpqw Redirector interface
2888 1 = /dev/cpqhealth/crom EISA CROM
2889 2 = /dev/cpqhealth/cdt Data Table
2890 3 = /dev/cpqhealth/cevt Event Log
2891 4 = /dev/cpqhealth/casr Automatic Server Recovery
2892 5 = /dev/cpqhealth/cecc ECC Memory
2893 6 = /dev/cpqhealth/cmca Machine Check Architecture
2894 7 = /dev/cpqhealth/ccsm Deprecated CDT
2895 8 = /dev/cpqhealth/cnmi NMI Handling
2896 9 = /dev/cpqhealth/css Sideshow Management
2897 10 = /dev/cpqhealth/cram CMOS interface
2898 11 = /dev/cpqhealth/cpci PCI IRQ interface
2900 208 char User space serial ports
2901 0 = /dev/ttyU0 First user space serial port
2902 1 = /dev/ttyU1 Second user space serial port
2903 ...
2905 209 char User space serial ports (alternate devices)
2906 0 = /dev/cuu0 Callout device for ttyU0
2907 1 = /dev/cuu1 Callout device for ttyU1
2908 ...
2910 210 char SBE, Inc. sync/async serial card
2911 0 = /dev/sbei/wxcfg0 Configuration device for board 0
2912 1 = /dev/sbei/dld0 Download device for board 0
2913 2 = /dev/sbei/wan00 WAN device, port 0, board 0
2914 3 = /dev/sbei/wan01 WAN device, port 1, board 0
2915 4 = /dev/sbei/wan02 WAN device, port 2, board 0
2916 5 = /dev/sbei/wan03 WAN device, port 3, board 0
2917 6 = /dev/sbei/wanc00 WAN clone device, port 0, board 0
2918 7 = /dev/sbei/wanc01 WAN clone device, port 1, board 0
2919 8 = /dev/sbei/wanc02 WAN clone device, port 2, board 0
2920 9 = /dev/sbei/wanc03 WAN clone device, port 3, board 0
2921 10 = /dev/sbei/wxcfg1 Configuration device for board 1
2922 11 = /dev/sbei/dld1 Download device for board 1
2923 12 = /dev/sbei/wan10 WAN device, port 0, board 1
2924 13 = /dev/sbei/wan11 WAN device, port 1, board 1
2925 14 = /dev/sbei/wan12 WAN device, port 2, board 1
2926 15 = /dev/sbei/wan13 WAN device, port 3, board 1
2927 16 = /dev/sbei/wanc10 WAN clone device, port 0, board 1
2928 17 = /dev/sbei/wanc11 WAN clone device, port 1, board 1
2929 18 = /dev/sbei/wanc12 WAN clone device, port 2, board 1
2930 19 = /dev/sbei/wanc13 WAN clone device, port 3, board 1
2931 ...
2933 Yes, each board is really spaced 10 (decimal) apart.
2935 211 char Addinum CPCI1500 digital I/O card
2936 0 = /dev/addinum/cpci1500/0 First CPCI1500 card
2937 1 = /dev/addinum/cpci1500/1 Second CPCI1500 card
2938 ...
2940 212 char LinuxTV.org DVB driver subsystem
2941 0 = /dev/dvb/adapter0/video0 first video decoder of first card
2942 1 = /dev/dvb/adapter0/audio0 first audio decoder of first card
2943 2 = /dev/dvb/adapter0/sec0 (obsolete/unused)
2944 3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
2945 4 = /dev/dvb/adapter0/demux0 first demux device of first card
2946 5 = /dev/dvb/adapter0/dvr0 first digital video recoder device of first card
2947 6 = /dev/dvb/adapter0/ca0 first common access port of first card
2948 7 = /dev/dvb/adapter0/net0 first network device of first card
2949 8 = /dev/dvb/adapter0/osd0 first on-screen-display device of first card
2950 9 = /dev/dvb/adapter0/video1 second video decoder of first card
2951 ...
2952 64 = /dev/dvb/adapter1/video0 first video decoder of second card
2953 ...
2954 128 = /dev/dvb/adapter2/video0 first video decoder of third card
2955 ...
2956 196 = /dev/dvb/adapter3/video0 first video decoder of fourth card
2958 216 char Bluetooth RFCOMM TTY devices
2959 0 = /dev/rfcomm0 First Bluetooth RFCOMM TTY device
2960 1 = /dev/rfcomm1 Second Bluetooth RFCOMM TTY device
2961 ...
2963 217 char Bluetooth RFCOMM TTY devices (alternate devices)
2964 0 = /dev/curf0 Callout device for rfcomm0
2965 1 = /dev/curf1 Callout device for rfcomm1
2966 ...
2968 218 char The Logical Company bus Unibus/Qbus adapters
2969 0 = /dev/logicalco/bci/0 First bus adapter
2970 1 = /dev/logicalco/bci/1 First bus adapter
2971 ...
2973 219 char The Logical Company DCI-1300 digital I/O card
2974 0 = /dev/logicalco/dci1300/0 First DCI-1300 card
2975 1 = /dev/logicalco/dci1300/1 Second DCI-1300 card
2976 ...
2978 220 char Myricom Myrinet "GM" board
2979 0 = /dev/myricom/gm0 First Myrinet GM board
2980 1 = /dev/myricom/gmp0 First board "root access"
2981 2 = /dev/myricom/gm1 Second Myrinet GM board
2982 3 = /dev/myricom/gmp1 Second board "root access"
2983 ...
2985 221 char VME bus
2986 0 = /dev/bus/vme/m0 First master image
2987 1 = /dev/bus/vme/m1 Second master image
2988 2 = /dev/bus/vme/m2 Third master image
2989 3 = /dev/bus/vme/m3 Fourth master image
2990 4 = /dev/bus/vme/s0 First slave image
2991 5 = /dev/bus/vme/s1 Second slave image
2992 6 = /dev/bus/vme/s2 Third slave image
2993 7 = /dev/bus/vme/s3 Fourth slave image
2994 8 = /dev/bus/vme/ctl Control
2996 It is expected that all VME bus drivers will use the
2997 same interface. For interface documentation see
2998 http://www.vmelinux.org/.
3000 224 char A2232 serial card
3001 0 = /dev/ttyY0 First A2232 port
3002 1 = /dev/ttyY1 Second A2232 port
3003 ...
3005 225 char A2232 serial card (alternate devices)
3006 0 = /dev/cuy0 Callout device for ttyY0
3007 1 = /dev/cuy1 Callout device for ttyY1
3008 ...
3010 226 char Direct Rendering Infrastructure (DRI)
3011 0 = /dev/dri/card0 First graphics card
3012 1 = /dev/dri/card1 Second graphics card
3013 ...
3015 227 char IBM 3270 terminal Unix tty access
3016 1 = /dev/3270/tty1 First 3270 terminal
3017 2 = /dev/3270/tty2 Seconds 3270 terminal
3018 ...
3020 228 char IBM 3270 terminal block-mode access
3021 0 = /dev/3270/tub Controlling interface
3022 1 = /dev/3270/tub1 First 3270 terminal
3023 2 = /dev/3270/tub2 Second 3270 terminal
3024 ...
3026 229 char IBM iSeries/pSeries virtual console
3027 0 = /dev/hvc0 First console port
3028 1 = /dev/hvc1 Second console port
3029 ...
3031 230 char IBM iSeries virtual tape
3032 0 = /dev/iseries/vt0 First virtual tape, mode 0
3033 1 = /dev/iseries/vt1 Second virtual tape, mode 0
3034 ...
3035 32 = /dev/iseries/vt0l First virtual tape, mode 1
3036 33 = /dev/iseries/vt1l Second virtual tape, mode 1
3037 ...
3038 64 = /dev/iseries/vt0m First virtual tape, mode 2
3039 65 = /dev/iseries/vt1m Second virtual tape, mode 2
3040 ...
3041 96 = /dev/iseries/vt0a First virtual tape, mode 3
3042 97 = /dev/iseries/vt1a Second virtual tape, mode 3
3043 ...
3044 128 = /dev/iseries/nvt0 First virtual tape, mode 0, no rewind
3045 129 = /dev/iseries/nvt1 Second virtual tape, mode 0, no rewind
3046 ...
3047 160 = /dev/iseries/nvt0l First virtual tape, mode 1, no rewind
3048 161 = /dev/iseries/nvt1l Second virtual tape, mode 1, no rewind
3049 ...
3050 192 = /dev/iseries/nvt0m First virtual tape, mode 2, no rewind
3051 193 = /dev/iseries/nvt1m Second virtual tape, mode 2, no rewind
3052 ...
3053 224 = /dev/iseries/nvt0a First virtual tape, mode 3, no rewind
3054 225 = /dev/iseries/nvt1a Second virtual tape, mode 3, no rewind
3055 ...
3057 "No rewind" refers to the omission of the default
3058 automatic rewind on device close. The MTREW or MTOFFL
3059 ioctl()'s can be used to rewind the tape regardless of
3060 the device used to access it.
3062 231 char InfiniBand
3063 0 = /dev/infiniband/umad0
3064 1 = /dev/infiniband/umad1
3065 ...
3066 63 = /dev/infiniband/umad63 63rd InfiniBandMad device
3067 64 = /dev/infiniband/issm0 First InfiniBand IsSM device
3068 65 = /dev/infiniband/issm1 Second InfiniBand IsSM device
3069 ...
3070 127 = /dev/infiniband/issm63 63rd InfiniBand IsSM device
3071 128 = /dev/infiniband/uverbs0 First InfiniBand verbs device
3072 129 = /dev/infiniband/uverbs1 Second InfiniBand verbs device
3073 ...
3074 159 = /dev/infiniband/uverbs31 31st InfiniBand verbs device
3076 232 char Biometric Devices
3077 0 = /dev/biometric/sensor0/fingerprint first fingerprint sensor on first device
3078 1 = /dev/biometric/sensor0/iris first iris sensor on first device
3079 2 = /dev/biometric/sensor0/retina first retina sensor on first device
3080 3 = /dev/biometric/sensor0/voiceprint first voiceprint sensor on first device
3081 4 = /dev/biometric/sensor0/facial first facial sensor on first device
3082 5 = /dev/biometric/sensor0/hand first hand sensor on first device
3083 ...
3084 10 = /dev/biometric/sensor1/fingerprint first fingerprint sensor on second device
3085 ...
3086 20 = /dev/biometric/sensor2/fingerprint first fingerprint sensor on third device
3087 ...
3089 233 char PathScale InfiniPath interconnect
3090 0 = /dev/ipath Primary device for programs (any unit)
3091 1 = /dev/ipath0 Access specifically to unit 0
3092 2 = /dev/ipath1 Access specifically to unit 1
3093 ...
3094 4 = /dev/ipath3 Access specifically to unit 3
3095 129 = /dev/ipath_sma Device used by Subnet Management Agent
3096 130 = /dev/ipath_diag Device used by diagnostics programs
3098 234-239 UNASSIGNED
3100 240-254 char LOCAL/EXPERIMENTAL USE
3102 240-254 block LOCAL/EXPERIMENTAL USE
3103 Allocated for local/experimental use. For devices not
3104 assigned official numbers, these ranges should be
3105 used in order to avoid conflicting with future assignments.
3107 255 char RESERVED
3109 255 block RESERVED
3111 This major is reserved to assist the expansion to a
3112 larger number space. No device nodes with this major
3113 should ever be created on the filesystem.
3114 (This is probably not true anymore, but I'll leave it
3115 for now /Torben)
3117 ---LARGE MAJORS!!!!!---
3119 256 char Equinox SST multi-port serial boards
3120 0 = /dev/ttyEQ0 First serial port on first Equinox SST board
3121 127 = /dev/ttyEQ127 Last serial port on first Equinox SST board
3122 128 = /dev/ttyEQ128 First serial port on second Equinox SST board
3123 ...
3124 1027 = /dev/ttyEQ1027 Last serial port on eighth Equinox SST board
3126 256 block Resident Flash Disk Flash Translation Layer
3127 0 = /dev/rfda First RFD FTL layer
3128 16 = /dev/rfdb Second RFD FTL layer
3129 ...
3130 240 = /dev/rfdp 16th RFD FTL layer
3132 257 char Phoenix Technologies Cryptographic Services Driver
3133 0 = /dev/ptlsec Crypto Services Driver
3135 257 block SSFDC Flash Translation Layer filesystem
3136 0 = /dev/ssfdca First SSFDC layer
3137 8 = /dev/ssfdcb Second SSFDC layer
3138 16 = /dev/ssfdcc Third SSFDC layer
3139 24 = /dev/ssfdcd 4th SSFDC layer
3140 32 = /dev/ssfdce 5th SSFDC layer
3141 40 = /dev/ssfdcf 6th SSFDC layer
3142 48 = /dev/ssfdcg 7th SSFDC layer
3143 56 = /dev/ssfdch 8th SSFDC layer
3145 258 block ROM/Flash read-only translation layer
3146 0 = /dev/blockrom0 First ROM card's translation layer interface
3147 1 = /dev/blockrom1 Second ROM card's translation layer interface
3148 ...
3150 259 block Block Extended Major
3151 Used dynamically to hold additional partition minor
3152 numbers and allow large numbers of partitions per device
3154 259 char FPGA configuration interfaces
3155 0 = /dev/icap0 First Xilinx internal configuration
3156 1 = /dev/icap1 Second Xilinx internal configuration
3158 260 char OSD (Object-based-device) SCSI Device
3159 0 = /dev/osd0 First OSD Device
3160 1 = /dev/osd1 Second OSD Device
3161 ...
3162 255 = /dev/osd255 256th OSD Device
3164 **** ADDITIONAL /dev DIRECTORY ENTRIES
3166 This section details additional entries that should or may exist in
3167 the /dev directory. It is preferred that symbolic links use the same
3168 form (absolute or relative) as is indicated here. Links are
3169 classified as "hard" or "symbolic" depending on the preferred type of
3170 link; if possible, the indicated type of link should be used.
3173 Compulsory links
3175 These links should exist on all systems:
3177 /dev/fd /proc/self/fd symbolic File descriptors
3178 /dev/stdin fd/0 symbolic stdin file descriptor
3179 /dev/stdout fd/1 symbolic stdout file descriptor
3180 /dev/stderr fd/2 symbolic stderr file descriptor
3181 /dev/nfsd socksys symbolic Required by iBCS-2
3182 /dev/X0R null symbolic Required by iBCS-2
3184 Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
3186 Recommended links
3188 It is recommended that these links exist on all systems:
3190 /dev/core /proc/kcore symbolic Backward compatibility
3191 /dev/ramdisk ram0 symbolic Backward compatibility
3192 /dev/ftape qft0 symbolic Backward compatibility
3193 /dev/bttv0 video0 symbolic Backward compatibility
3194 /dev/radio radio0 symbolic Backward compatibility
3195 /dev/i2o* /dev/i2o/* symbolic Backward compatibility
3196 /dev/scd? sr? hard Alternate SCSI CD-ROM name
3198 Locally defined links
3200 The following links may be established locally to conform to the
3201 configuration of the system. This is merely a tabulation of existing
3202 practice, and does not constitute a recommendation. However, if they
3203 exist, they should have the following uses.
3205 /dev/mouse mouse port symbolic Current mouse device
3206 /dev/tape tape device symbolic Current tape device
3207 /dev/cdrom CD-ROM device symbolic Current CD-ROM device
3208 /dev/cdwriter CD-writer symbolic Current CD-writer device
3209 /dev/scanner scanner symbolic Current scanner device
3210 /dev/modem modem port symbolic Current dialout device
3211 /dev/root root device symbolic Current root filesystem
3212 /dev/swap swap device symbolic Current swap device
3214 /dev/modem should not be used for a modem which supports dialin as
3215 well as dialout, as it tends to cause lock file problems. If it
3216 exists, /dev/modem should point to the appropriate primary TTY device
3217 (the use of the alternate callout devices is deprecated).
3219 For SCSI devices, /dev/tape and /dev/cdrom should point to the
3220 ``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
3221 /dev/cdwriter and /dev/scanner should point to the appropriate generic
3222 SCSI devices (/dev/sg*).
3224 /dev/mouse may point to a primary serial TTY device, a hardware mouse
3225 device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
3227 Sockets and pipes
3229 Non-transient sockets and named pipes may exist in /dev. Common entries are:
3231 /dev/printer socket lpd local socket
3232 /dev/log socket syslog local socket
3233 /dev/gpmdata socket gpm mouse multiplexer
3235 Mount points
3237 The following names are reserved for mounting special filesystems
3238 under /dev. These special filesystems provide kernel interfaces that
3239 cannot be provided with standard device nodes.
3241 /dev/pts devpts PTY slave filesystem
3242 /dev/shm tmpfs POSIX shared memory maintenance access
3244 **** TERMINAL DEVICES
3246 Terminal, or TTY devices are a special class of character devices. A
3247 terminal device is any device that could act as a controlling terminal
3248 for a session; this includes virtual consoles, serial ports, and
3249 pseudoterminals (PTYs).
3251 All terminal devices share a common set of capabilities known as line
3252 disciplines; these include the common terminal line discipline as well
3253 as SLIP and PPP modes.
3255 All terminal devices are named similarly; this section explains the
3256 naming and use of the various types of TTYs. Note that the naming
3257 conventions include several historical warts; some of these are
3258 Linux-specific, some were inherited from other systems, and some
3259 reflect Linux outgrowing a borrowed convention.
3261 A hash mark (#) in a device name is used here to indicate a decimal
3262 number without leading zeroes.
3264 Virtual consoles and the console device
3266 Virtual consoles are full-screen terminal displays on the system video
3267 monitor. Virtual consoles are named /dev/tty#, with numbering
3268 starting at /dev/tty1; /dev/tty0 is the current virtual console.
3269 /dev/tty0 is the device that should be used to access the system video
3270 card on those architectures for which the frame buffer devices
3271 (/dev/fb*) are not applicable. Do not use /dev/console
3272 for this purpose.
3274 The console device, /dev/console, is the device to which system
3275 messages should be sent, and on which logins should be permitted in
3276 single-user mode. Starting with Linux 2.1.71, /dev/console is managed
3277 by the kernel; for previous versions it should be a symbolic link to
3278 either /dev/tty0, a specific virtual console such as /dev/tty1, or to
3279 a serial port primary (tty*, not cu*) device, depending on the
3280 configuration of the system.
3282 Serial ports
3284 Serial ports are RS-232 serial ports and any device which simulates
3285 one, either in hardware (such as internal modems) or in software (such
3286 as the ISDN driver.) Under Linux, each serial ports has two device
3287 names, the primary or callin device and the alternate or callout one.
3288 Each kind of device is indicated by a different letter. For any
3289 letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
3290 respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
3291 correspond to /dev/cua# and /dev/cub#. In the future, it should be
3292 expected that multiple letters will be used; all letters will be upper
3293 case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
3294 "cu" device (e.g. /dev/cudp#).
3296 The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
3298 The alternate devices provide for kernel-based exclusion and somewhat
3299 different defaults than the primary devices. Their main purpose is to
3300 allow the use of serial ports with programs with no inherent or broken
3301 support for serial ports. Their use is deprecated, and they may be
3302 removed from a future version of Linux.
3304 Arbitration of serial ports is provided by the use of lock files with
3305 the names /var/lock/LCK..ttyX#. The contents of the lock file should
3306 be the PID of the locking process as an ASCII number.
3308 It is common practice to install links such as /dev/modem
3309 which point to serial ports. In order to ensure proper locking in the
3310 presence of these links, it is recommended that software chase
3311 symlinks and lock all possible names; additionally, it is recommended
3312 that a lock file be installed with the corresponding alternate
3313 device. In order to avoid deadlocks, it is recommended that the locks
3314 are acquired in the following order, and released in the reverse:
3316 1. The symbolic link name, if any (/var/lock/LCK..modem)
3317 2. The "tty" name (/var/lock/LCK..ttyS2)
3318 3. The alternate device name (/var/lock/LCK..cua2)
3320 In the case of nested symbolic links, the lock files should be
3321 installed in the order the symlinks are resolved.
3323 Under no circumstances should an application hold a lock while waiting
3324 for another to be released. In addition, applications which attempt
3325 to create lock files for the corresponding alternate device names
3326 should take into account the possibility of being used on a non-serial
3327 port TTY, for which no alternate device would exist.
3329 Pseudoterminals (PTYs)
3331 Pseudoterminals, or PTYs, are used to create login sessions or provide
3332 other capabilities requiring a TTY line discipline (including SLIP or
3333 PPP capability) to arbitrary data-generation processes. Each PTY has
3334 a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
3335 /dev/tty[p-za-e][0-9a-f]. The kernel arbitrates the use of PTYs by
3336 allowing each master side to be opened only once.
3338 Once the master side has been opened, the corresponding slave device
3339 can be used in the same manner as any TTY device. The master and
3340 slave devices are connected by the kernel, generating the equivalent
3341 of a bidirectional pipe with TTY capabilities.
3343 Recent versions of the Linux kernels and GNU libc contain support for
3344 the System V/Unix98 naming scheme for PTYs, which assigns a common
3345 device, /dev/ptmx, to all the masters (opening it will automatically
3346 give you a previously unassigned PTY) and a subdirectory, /dev/pts,
3347 for the slaves; the slaves are named with decimal integers (/dev/pts/#
3348 in our notation). This removes the problem of exhausting the
3349 namespace and enables the kernel to automatically create the device
3350 nodes for the slaves on demand using the "devpts" filesystem.