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#1 2014-01-26 10:41:30

pegaduba
Member
Registered: 2014-01-26
Posts: 1

can not mount some DVDs

Problem: I can mount few DVDs, however few DVDs are throwing following error while mounting. I could see sr0 at the end of lsblk output after inserting dvd into Rom.
1. Command, I have used is #mount /dev/sr0 /mnt/CD. Output of this cmd is -
# mount /dev/sr0 /mnt/hd/
mount: /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
2. Output of dmesg | tail
[ 3868.377303] EXT4-fs (sr0): unable to read superblock
[ 3868.440938] sr 1:0:0:0: [sr0] 
[ 3868.440942] Result: hostbyte=0x00 driverbyte=0x08
[ 3868.440946] sr 1:0:0:0: [sr0] 
[ 3868.440947] Sense Key : 0x5 [current]
[ 3868.440951] sr 1:0:0:0: [sr0] 
[ 3868.440953] ASC=0x64 ASCQ=0x0
[ 3868.440956] sr 1:0:0:0: [sr0] CDB:
[ 3868.440957] cdb[0]=0x28: 28 00 00 00 00 10 00 00 01 00
[ 3868.441026] isofs_fill_super: bread failed, dev=sr0, iso_blknum=16, block=16

3. Tried mounting with -t iso9660 or -t udf - did not work.
4. Installed regionset - did not work.
5. Tried to play DVD directly from mplayer DVD:// and other possible combinations -  Did not work

Note: libraries like dvdread, dvdcss, dvdnav are already installed on laptop. I am using SONY Vaio. These DVDs are working fine on DVD players. Only few DVDs are giving these errors.

Could you please help me mounting Dvds? ( Although, I have been using linux distros for long time, I have switched to arch linux recently and really loved it.)

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#2 2014-01-26 19:43:27

Potomac
Member
Registered: 2011-12-25
Posts: 528

Re: can not mount some DVDs

you don't use automount for DVD and removable devices ? ( most of desktop managements like KDE/Gnome provide this feature )

otherwise if the standard mount command doesn't work this may related to a damaged DVD surface, or an anti-copy protection ( this kind of protection can generate problems with DVD-Rom player, but not on a standard DVD player )

the regular command for mounting a DVD video on archlinux is :

mount -t iso9660 -o ro /dev/sr0  /mnt/media

you can try without specifying the format :

mount -o ro /dev/sr0 /mnt/media

Last edited by Potomac (2014-01-26 19:47:17)

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