DVDs mount CDs don't

[gleble]

My cdrom has developed a strange problem. It will mount and play DVDs but says Unable to scan CD-RW/DVD+-RW Drive for media changes. In the text blow it suggests a possible cause might be 'message bus security policy blocked the reply'

Does anybody know what is wrong?

[gleble]

I tried $mount cdrom and got

***@laptop:~$ mount cdrom
mount: can't find cdrom in /etc/fstab or /etc/mtab

Any ideas

[boof1988]

I tried $mount cdrom and got

***@laptop:~$ mount cdrom
mount: can't find cdrom in /etc/fstab or /etc/mtab

Any ideas

Maybe try...

mount /dev/cdrom

You might have to have the "/dev/" part in front of the "cdrom".

Also, could you maybe post the output of...

cat /etc/fstab

and

sudo fdisk -l

... these may help with trouble-shooting your problem.

[gleble]

Here you go. Hope it makes sense to you.

*@laptop:~$ mount /dev/cdrom
mount: block device /dev/scd0 is write-protected, mounting read-only
mount: /dev/scd0 already mounted or /media/cdrom0 busy
mount: according to mtab, /dev/scd0 is already mounted on /media/cdrom0
*@laptop:~$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
# /dev/sda5
UUID=856d304d-903a-4c0d-83fc-b7585c43c09e /               ext3    relatime,errors=remount-ro 0       1
# /dev/sda6
UUID=671d992d-5b95-4d2d-ab53-187550277aa5 none            swap    sw              0       0
/dev/scd0       /media/cdrom0   udf,iso9660 user,noauto,exec,utf8 0       0

*@nlaptop:~$ sudo fdisk -l

Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x93fec8ad

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1        1275    10240000   27  Unknown
/dev/sda2            1343       10320    72115785   83  Linux
/dev/sda4           10760       19457    69866685    5  Extended
/dev/sda5           10760       19097    66974953+  83  Linux
/dev/sda6           19098       19457     2891668+  82  Linux swap / Solaris

[gleble]

Sorry on the last post I had a DVD in the drive.
Now with a CD in mount /dev/cdrom0 works after mssing about for a bit. Thanks

[gleble]

One more point. What does the ISO reference mean in this line from fstab

/dev/scd0       /media/cdrom0   auto,iso9660 user,noauto,exec,utf8 0       0

[boof1988]

One more point. What does the ISO reference mean in this line from fstab

/dev/scd0       /media/cdrom0   auto,iso9660 user,noauto,exec,utf8 0       0

According to Ubuntu Community fstab page, it seems that iso9660 is the file-system type used (generally) for CD/DVD media.

I'm not sure why the CDs do not mount automatically. Hopefully someone else can help.

For reference:
https://help.ubuntu.com/community/Mount
https://help.ubuntu.com/community/Fstab
http://manpages.ubuntu.com/manpages/...8/mount.8.html
https://help.ubuntu.com/community/Mount/USB

[yaroto98]

How are you unmounting the dvds? You might not be fully unmounting dvds before trying to mount the cds. Put in a cd and reboot. What happens?