Questions regarding mounting CD-ROM on linux

Question

I am trying to mount the dvd+rw drives in my Debian 7 PC. There are two drives and I can see that these exist in /dev:

$ ls -la /dev/dvd*
lrwxrwxrwx 1 root root 3 Oct 26 07:47 dvd -> sr1
lrwxrwxrwx 1 root root 3 Oct 26 12:41 dvd1 -> sr0
lrwxrwxrwx 1 root root 3 Oct 26 07:47 dvdrw -> sr1
lrwxrwxrwx 1 root root 3 Oct 26 12:41 dvdrw1 -> sr0

The following lines exist in my /etc/fstab file and were not put there by me:

/dev/sr0 /media/cdrom0 udf,iso9660 user,noauto 0 0
/dev/sr1 /media/cdrom1 udf,iso9660 user,noauto 0 0

Nobody else has used this PC - I only recently installed debian7 and so, I assume that the installation process created these mount-points automatically.

If I run sudo mount -a the drives do not mount, though:

$ mount | grep cd
# no results returned
$ df | grep cd
# no results returned

I tried changing /etc/fsab to:

/dev/sr0 /media/cdrom0 defaults 0 0
/dev/sr1 /media/cdrom1 defaults 0 0

But there were still no results from mount or df. As suggested by jordanm, i have tried to mount one of the drives manually:

$ sudo mount -t iso9660 -o defaults /dev/sr0 /media/cdrom0
mount: block device /dev/sr0 is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/sr0,
   missing codepage or helper program, or other error
   In some cases useful info is found in syslog - try
   dmesg | tail  or so

You will probably find that most of those things are symlinks to each other. Try to mount manually or use your GUI file manager. — jordanm, Oct 26 '13 at 02:35
oh you are absolutely right! i have no gui tho. will update the question... — mulllhausen, Oct 26 '13 at 02:37
Is this a data CD or audio CD? You can't mount an audio CD like that. — slm, Oct 26 '13 at 02:47
its an audio cd. i didn't realise that the type of cd mattered. truth be told i thought i was interfacing with the drive (hardware) rather than a filesystem burnt on the cd — mulllhausen, Oct 26 '13 at 02:51
The mount command can only mount drives that have filesystems on them. — slm, Oct 26 '13 at 03:12
+ 1 fore mentioning that audio cds can't be mounted using mount command.. — Purinda Gunasekara, Oct 27 '13 at 23:25

score 3 · Answer 1 · edited Apr 13 '17 at 12:36

If the CD discs are data disk, then they'll be mounted as you've described, however if they're audio CDs then no they won't get mounted like a traditional drive. Applications that can make use of audio CDs will simply access this media when you refer to it in these tools.

See my answer to this U&L Q&A titled: Reading amount of tracks from an audio CD?.

Example

2 such tools are cdparanoia or cdda2wav.

$ cdparanoia -sQ
cdparanoia III release 10.2 (September 11, 2008)


Table of contents (audio tracks only):
track        length               begin        copy pre ch
===========================================================
  1.    19497 [04:19.72]        0 [00:00.00]    OK   no  2
  2.    20253 [04:30.03]    19497 [04:19.72]    OK   no  2
  3.    29250 [06:30.00]    39750 [08:50.00]    OK   no  2
  4.    34263 [07:36.63]    69000 [15:20.00]    OK   no  2
  5.    28804 [06:24.04]   103263 [22:56.63]    OK   no  2
  6.    21582 [04:47.57]   132067 [29:20.67]    OK   no  2
  7.    33270 [07:23.45]   153649 [34:08.49]    OK   no  2
  8.    29919 [06:38.69]   186919 [41:32.19]    OK   no  2
  9.    29564 [06:34.14]   216838 [48:11.13]    OK   no  2
 10.    18993 [04:13.18]   246402 [54:45.27]    OK   no  2
 11.    35368 [07:51.43]   265395 [58:58.45]    OK   no  2
TOTAL  300763 [66:50.13]    (audio only)

Questions regarding mounting CD-ROM on linux

1 Answers1

Example