I just installed 12.10 on a drive that already has an xp installation. When I boot the computer, I get the grub menu and select Ubuntu. The screen just goes black and I have my mouse pointer, but it just stays that way. I can boot into xp with no problem.
I choose custom partitioning and added a 4GB swap partition right after the xp partition. Then I added a 20GB ext4 partition for the install and selected / as the mount point. For the location of the boot loader, I selected the drive that the OS is on. This part of the installer is very cryptic. You would think that by now someone would have figured out a simple and straight forward way of setting up the partition and grub options, maybe the next version will be better. As far as I could understand what I was selecting, I installed the bootloader to the MBR of the driver where Ubuntu and windows are installed (sda). I'm not sure what the grub install location would have to do with a boot issue, especially since grub loaded and works for windows, but that was the part of the installer that was the least clear. Looking at the partitions from inside windows, both the swap and root partitions are there and have been formatted.
The install seemed to go smoothly and there were no errors indicated. When the rig restarted after the install, I was not able to boot into Ubuntu. Should I try super grub or boot repair disk, or should I install again?