Bad superblock on /dev/sr0

Question

I'm trying to mount a Pink Floyd CD manually, just so I can browse its content but it doesn't work:
$ sudo mount -t iso9660 /dev/sr0 /mnt/cd_dvd/
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
$ dmesg | tail
[ 1370.241820] isofs_fill_super: bread failed, dev=sr0, iso_blknum=16, block=16
[ 1374.496878] sr 1:0:0:0: [sr0] Result: hostbyte=0x00 driverbyte=0x08
[ 1374.496884] sr 1:0:0:0: [sr0] Sense Key : 0x5 [current]
[ 1374.496889] sr 1:0:0:0: [sr0] ASC=0x64 ASCQ=0x0
[ 1374.496893] sr 1:0:0:0: [sr0] CDB: cdb[0]=0x28: 28 00 00 00 00 10 00 00 01 00
[ 1374.496903] end_request: I/O error, dev sr0, sector 64
[ 1374.496935] isofs_fill_super: bread failed, dev=sr0, iso_blknum=16, block=16
What could be the reason for this? I am able to play the cd in VLC without problems. Could this be related to some scratches on the cd surface?
Last edited by roygbiv (2011-12-02 17:16:29)

Answer 1

ewaller wrote:I believe that the abstraction provided by things like Microsoft Windows and KDE add to this confusion.  Those systems create user interfaces that provide the illusion there is an underlying file system on Audio CDs.  As long as you remember that it is an illusion, you might try "browsing" the Audio CDs with Dolphin and the Audio CD kioslave.
That is true. For end-users this is a convenient feature when using an OS because then they don't actually need to know the difference between Audio CD formats and CD-ROM formats - which in this case I was not aware of before now. Reading the wikipedia article on the Rainbow Books did clear things up.
karol wrote:Have you tried e.g. http://www.archlinux.org/packages/?name=cdfs ?
Thanks, I tried it and it froze my computer until I ejected my cd. I will try more of this later on.