Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Possible Duplicate:
Can't mount filesystems and computer won't shut down

Using Nautilus I can't get my internal or external volumes to mount and get "unable to mount " and "not authorized" after an update of Ubuntu 11.10 beta and also I cannot reboot normally instead I need to reboot using terminal as root. Notes that i can mount my volumes using terminal as root.

Rebooting and shutting down just send me back to unity-greeter lightdm login screen.

share|improve this question

marked as duplicate by fossfreedom Feb 24 '12 at 20:38

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

This was happening to me. It looked like the upgrade removed the partition entry from /etc/fstab. Try putting it back in.

share|improve this answer

Having the same problem here. Special thanks to Peds, your answer put me on the right track. My solution hasn't fixed everything but I did get some functionality back by adding the cdrom entry back to fstab.

/dev/cdrom  /media/cdrom    auto    ro,noauto,user,exec     0 0

and then running the following from terminal:

sudo mkdir /media/cdrom

Unity doesn't show the correct title on the device after changing disks this way. But mounting works. The fstab entry was missing after update and the folder for the mount point was missing too.

Hope this helps someone in the know come up with a proper fix.

share|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.