re: #221 SpaceJesus
Well, the disk says it is for upgrades on the box, but it also allows a new installationg of windows.
I was more concerned with a scratch or weird area on the disk itself.
Put your other drive in by itself and then boot from the Windows install disk. It should see the Vista and ask if you want to upgrade or perform a new install. If it does see the Vista drive then your new drive is likely the problem.
It won’t overwrite your Vista drive without asking first, so you don’t have to worry much.