Upgrade from 8.04 to 10.04 - ubuntu won't start up

[Bino]

Since I noticed a new version of Ubuntu (10) was out and I was still running an old version (8.04) I thought about upgrading. With the update manager is selected update to 10.04 and everything went on it's way.

During the process I got asked if I wanted to update the GRUB loader. Since I also use Windows and with a previous update of GRUB I couldn't start into it anymore I selected, "keep this version" (which I think is now causing this trouble).

The upgrade completed and restarted, however, Ubuntu now doesn't start anymore.
I get prompted with:

mount: mounting none on /dev failed: No such device
udevd(896): error getting socket: Invalid argument
...

And the system just stops.

Any idea how to fix this?

edit: I started Ubuntu with the live CD and typed gedit /booot/grub/menu.lst which gave me a blank file. Is that normal?

[Elfy]

You need to mount the install first.


sudo fdisk -l

get the partition the install is on then mount it somewhere - will be sdxy - where x is a letter and y a number


sudo mkdir /mnt/tmp


sudo mount -t ext3 /dev/sdxy /mnt/tmp (change xy to suit)


gksudo gedit /mnt/tmp/boot/grub/menu.lst

[Bino]

From the menu.lst file the part that loads ubuntu


title Ubuntu
root (hd0,4)
kernel /boot/vmlinuz-2.6.24-16-generic root=UUID=eb86d580-46c0-4459-9f73-9255dd49493f ro quiet splash
initrd /boot/initrd.img-2.6.24-16-generic

Is this correct? If not, to what do I need to change it to?