I have a computer with a 250GB HD on which there were installed a few operating systems. When the computer boots, I got the GRUB menu with all these Ubuntu installations (about 10 versions - I don't know exactly why) and one Windows Vista, which was installed on a 20GB partition.
This Vista partition got almost full, and since the current user does not need all the Linux installations, I thought I can delete the other partitions and increase the Vista one.
So, I went to Vista's Disk Management utility and saw 4 or 5 partitions, of which one was C: and was ~20GB in size. One of the other partitions was about 170GB so I removed it to free the space. It did not allow me to increase the Vista partition size, though.
However, once the computer was restarted, I no longer get the GRUB menu. Instead, I see a GRUB Error 22 and the boot process gets stuck.
Can I make the computer boot from the Vista partition automatically? How?
If not, can I restore the deleted partition and the GRUB functionality?