Ubuntu
util-linux package

DVD/CDROM won't mount

Asked by walter paul

I run 10.04 LTS. The previous version 9.04 worked fine. After upgrade it will not mount the DVD/CD . I have gone on-line to look for a solution but nothing works. Below is the group print out and the error I get when trying to mount.

file /media/cdrom0; groups
/media/cdrom0: directory
wpaul adm dialout cdrom floppy audio dip video plugdev fuse lpadmin admin netdev sambashare

sudo mount /media/cdrom0
[sudo] password for wpaul:
mount: no medium found on /dev/sr0

Let me know what I can do. I have a Sony DRU-840A DVD/CD drive.

Walter

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walter paul (wfrpaul) said : 		#1

I also did a df print out and got:

wpaul@wpaul:~$ df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sdb1 152051968 36637004 107751964 26% /
none 508464 280 508184 1% /dev
none 512648 176 512472 1% /dev/shm
none 512648 344 512304 1% /var/run
none 512648 0 512648 0% /var/lock
none 512648 0 512648 0% /lib/init/rw

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walter paul (wfrpaul) said : 		#2

I also printed out fstab:

wpaul@wpaul:/etc$ cat fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# /dev/sdb1
UUID=12333e33-da73-40a7-8e66-5f66a13a3eb9 / ext3 relatime,errors=remount-ro 0 1
# /dev/sdb5
UUID=b7550914-e463-4f18-9dfd-18a83eeab3f3 none swap sw 0 0
/dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0

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delance (olivier-delance) said : 		#3

Could you post result of:
   ls /dev/sr* /dev/sc* /dev/cd* /dev/dvd*

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walter paul (wfrpaul) said : 		#4

Print out below:
ls /dev/sr* /dev/sc* /dev/cd* /dev/dvd*
/dev/cdrom /dev/cdrw /dev/dvd /dev/dvdrw /dev/scd0 /dev/sr0

Note: I can now get it to work but only if I have a cd/dvd in the drive when I boot ubuntu. If there is nothing in the drive on boot it gives me the "no optical device present" error when I use a program to access the cd/dvd.

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delance (olivier-delance) said : 		#5

I checked my /etc/fstab and have no line on /dev/scd0.
I read somewhere that Ubuntu is moving/has moved CD management from fstab (and mount command) to the daemon which manages all external media (udev and udisk).
You could add a "#" at start of line with /dev/scd0 and reboot (# make line a comment). Perhaps there is a conflict between those two softwares.
You can also have a look in https://answers.launchpad.net/ubuntu/+source/util-linux

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