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yuyichao

Member

Registered: 2011-04-04

Posts: 19

Cannot see the content of a cd

I have a mini cd with some photos on it (burnt in a photo studio by win xp/2000)

However I cannot see the photos in it. I cannot see it on another win XP computer either but it does work on one computer at my home running win XP~~~ (so there must be sth in the cd)

What I have already tried.

1, kde auto mount tell me it is a empty cd (and so does nautilus) (I suppose both of them come from udisks although I don't know how to make sure~)
2, sudo mount {,-t {udf,iso9660}} {-r} /dev/sr0 /mnt (I am pretty sure /dev/sr0 is the right device file) gives me sth like

mount: you must specify the filesystem type

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

3, dmesg | tail (after mount -t iso9660) gives me

[ 4849.568595] sr 1:0:0:0: [sr0]  Result: hostbyte=0x00 driverbyte=0x08
[ 4849.568601] sr 1:0:0:0: [sr0]  Sense Key : 0x5 [current] 
[ 4849.568606] sr 1:0:0:0: [sr0]  ASC=0x21 ASCQ=0x0
[ 4849.568610] sr 1:0:0:0: [sr0] CDB: cdb[0]=0x28: 28 00 00 00 00 10 00 00 01 00
[ 4849.568619] end_request: I/O error, dev sr0, sector 64
[ 4849.568637] isofs_fill_super: bread failed, dev=sr0, iso_blknum=16, block=16

4, cat /dev/sr0 or dd if=/dev/sr0 gives me nothing

5, sudo lshw -C disk gives me

  *-cdrom
       description: DVD-RAM writer
       product: BD-MLT UJ232A
       vendor: MATSHITA
       physical id: 1
       bus info: scsi@1:0.0.0
       logical name: /dev/sr0
       version: TC02
       capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
       configuration: ansiversion=5 status=ready
     *-medium
          physical id: 0
          logical name: /dev/sr0

(*-disk entry is removed~~~)

6, kde/gnome tell me the cd is writeable but I haven't tried (because there is useful data~~)

7, some of other mini cd burnt at the same place do work~~ (which means my hardware(and software) do support mini cd) although I am not 100% sure if they have changed their way of burning cd

Does anyone have any idea why it doesn't work? Or how can I tell if there is sth wrong with the cd itself (and how can I fix it if there is)?

THX

yuyichao

Member

Registered: 2011-04-04

Posts: 19

Re: Cannot see the content of a cd

a successful automount of the other mini cd gives me

$dmesg | tail
[ 5667.156904] ISO 9660 Extensions: Microsoft Joliet Level 3
[ 5667.157448] ISOFS: changing to secondary root

and

$mount
/dev/sr0 on /media/110103_1110 type iso9660 (ro,nosuid,nodev,relatime,uid=1000,gid=1000,iocharset=utf8,mode=0400,dmode=0500,uhelper=udisks)

and there is a /dev/sg1 under /dev (instead of only sr0 before~~)

(nothing changed in lshw (well, except the mount point is added~~~))