Devices list aren't show on Nautilus

After updating 12.04, my HDD partitions and USB storage devices was removed from the devices list on Nautilus Sidebar, only the "floppy0" is there.

I can see all of them with Disk Utility. I can mount them and add them to computer list on Nautilus (not to device list).

I can't see any device in /media, only "floppy", "floppy0" and "cdrom" folders.

fstab file:

# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass> proc            /proc           proc    nodev,noexec,nosuid 0       0
# / was on /dev/sda3 during installation UUID=ec9a8bbb-4cf0-4599-bf0e-85f7e3de6302 /               ext4   
errors=remount-ro 0       1
# swap was on /dev/sda6 during installation UUID=88002a18-0f7f-4e7a-87b7-ef8e9f6388c8 none            swap    sw  
0       0 /dev/fd0        /media/floppy0  auto   
rw,user,noauto,exec,utf8 0       0

Solution 1:

You can mount your partitions automatically on startup.

A very good tutorial on Ubuntu wiki on how to achieve it is given here.

You can also edit your /etc/fstab file, however it is more complex and generally not recommended if you've less experience.

/etc/fstab contains information of where your partitions and storage devices should be mounted and how.

The Ubuntu wiki also explains how you can edit the fstab file: here.

Additional References: http://www.tuxfiles.org/linuxhelp/fstab.html

The program that causes the nautilus to show the devices is gvfs-gdu-volume.

Check if it's running:

sudo ps -e | grep gvfs-gdu-volume

I got the following output:

1983 ?        00:00:00 gvfs-gdu-volume

If not, reinstall the package gvfs:

sudo apt-get install --reinstall gvfs