Problem: After a forced reboot because it froze the linux partition won’t mount.
"An error occurred while accessing 'Volume (ext3)', the system responded: org.freedesktop.Hal.Device.Volume.UnknownFailure: mount: wrong fs type, bad option, bad superblock on /dev/sda5. missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so"
Run from liveCD (disable three first thing in Other Options). Install gparted and run it
sudo apt-get install gparted sudo gparted
locate disk (sdd). Right click “check and repair”. Now it should be able to mount in dolphin, however it did fail in boot again. This time it is the location in GRUB2 that is wrong. Use an editor, kate, gedit or similar.
sudo kate /boot/grub/grub.conf
linux /boot/vmlinuz-2.6.18-6-686 root=/dev/sdd1
note that “root=/path/” This is where it went wrong. After setting the path rather than the UUID it would boot again.