It is a little complicated.... I have two physical disks, HD1 holds my systems (XP & Vista), and HHD2 was used for data. It had 3 partitions on it (I'm not sure as to the structure - which were physical and which logical). I've decided to install Ubuntu on the first partition on HD2, so I opened disk manager and unwittingly deleted it. Which caused my Windows (XP) to reboot, and when it booted the 1st and the 3rd partitions on HD2 became "Unallocated". I installed Ubuntu as planned, but it cannot load, giving me the error message (something like: cannot access partition).
I did set HD2 to be first in the boot sequence before installing and trying to load Ubuntu.
My question is, mainly, how I restore my lost partition (the 3rd on HD2).
Ubuntu not loading is another issue.
Would be grateful for any advice,