Comment 3 for bug 213884

I have had a similar experience with upgrading to Hardy.

The new kernel managed to mount my root filesystem (/dev/hda1) but failed to mount any more of them. running "fdisk /dev/hda" and "fdisk /dev/hdb" I received an error message that the devices did not exist.

In addition, either the upgrade or the new kernel corrupted the superblock of EVERY filesystem on both of my hard discs - booting the first time with the new kernel, it repaired the root filesystem before failing as above. When I rebooted using the old kernel, it had to repair the superblock on every other filesystem before coming up.

Of course, because of the old kernel expecting a different Nvidia driver, X was unusable with this kernel, so I have restored my system from the pre-upgrade backups. I have however kept a dump of / /usr and /var from the failed install, so I can get any information from this that may be needed to resolve this issue.

One note about my upgrade. I was unable to use the method recommended at https://help.ubuntu.com/community/HardyUpgrades/Kubuntu as Adept didn't get the expected upgrade button (see https://bugs.launchpad.net/ubuntu/+source/adept/+bug/219637) so upgraded as recommended by a respondent to that bug by running "sudo do-release-upgrade -d" which did the whole upgrade for me.