Im trying to clean up my drive as I've got some duplicates of 11.10 installed. My original install was messed up so I reinstalled (foolishly thinking it would just write over the original). I lived with it for a while before deciding to delete the partition to use the space as a storage for files I also want in windows (its a dual boot). After deleting the partition and updating grub (grub said everything was fine). I rebooted, only to be faced with grub rescue. After another install I've still got two ubuntu's. Someone please help....
Did you use only
Go CD or USB live, open Gparted and you will ave a complete table of your partitions, from there erase the partition you want to remove and expand to full disk the partition you want to keep.
T be sure to not face again grub rescue type in terminal:
where sdx stands for the name of your disk, example:
and everything will be all fine.