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Old 04-26-2011, 06:05 PM   #1
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Ubuntu 10.04 won't mount my DVD drive, though I've tried a lot of things

I didn't realize this would be my first post.

Anyway, I recently finished building a computer. It has both a CD drive and a DVD drive. The first OS I installed was Slackware 13.1, and I used the DVD drive, since I used the DVD iso instead of the 6 CDs. That went over fine.
Then I installed Ubuntu 10.04 next to it, again, using the DVD drive to boot from (the CD drive worked, but it wouldn't boot from the CD drive, but booted from the DVD drive).
In Slackware's KDE, DVDs were recongnized, and so were CDs, and soon I thought nothing more of it. In Ubuntu, though, it wouldn't pick up DVDs, and now the DVD drive won't mount anymore.

It shows up when I go to Places from the menu, but it won't mount. It just says there is no media in the drive (even if there is), or that the drive doesn't exist (even though it does).

Udisk --dump
shows that it is there. It doesn't show up in /etc/fstab, but niether does the CD drive. The CD drive will show up in /etc/fstab when I put a CD in the drive. The DVD drive will just blink it's little light and twirl the DVD, then nothing.

I've tried making a mount point in /media/ called /media/dvd/ to use as a mount point, then ran the following command:
mount -o iso9660 ro /dev/sr0 /media/dvd/
and it will tell me that either the device does not exist (though it shows up by all of it's logical names in /dev/, in addition to everything above), or that there is no media in the device, even if it is something that used to work before the Ubuntu installation.

I've even tried some of the more bizarre things that I've seen in my hours and days of searches, including but not limited to, disabling the CD drive in the BIOS, starting with a blank DVD in the drive, adding the lines to /dev/fstab and then commenting them out, among other things.

Any and all help would be greatly appreciated. Thank you.
Old 04-26-2011, 07:06 PM   #2
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My primary OS is Opensuse, so things may be quite different, but here are my thoughts on the problem.

I also have two optical drives: one cd and one dvd. My cd drive is /dev/sr0 and the dvd is /dev/sr1.

I don't know what utilities Ubuntu provides to probe your hardware, but you should have some kind of system management tool such as an info center or something similar. Look into that to see if you can find something for listing or setting up your hardware. It may well be that your cd drive is /dev/sr0 and the dvd drive at /dev/sr1, as in my system. The devices may be assigned, but not yet enabled, which you should be able to enable in the hardware management tool.
Old 04-26-2011, 08:20 PM   #3
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I wouldn't disable anything but edit your fstab to suit. My fstab on this laptop which is a CD/DVD (only reads DVDs) is
/dev/scd0       /media/cdrom0   udf,iso9660 user,noauto     0       0
Old 04-26-2011, 08:23 PM   #4
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It should be listed in fstab
cat /etc/fstab
sudo cat /etc/fstab


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