Ok I've installed Vista and XP a few times now to try and fix a problem I have. I originally upgraded my XP to Vista when I recieved the Vista RTM from my college. However it still wasn't very stable and I ended up having to reinstall both operating systems a number of times to make it finally work. Then once it was stable I removed XP from the computer. SInce that time I have been unable to format my drive that had XP as it sasys it is a system drive and can't be formatted. Further more if I don't have said drive hooked up and try to boot to my Vista drive, I get a cannot find NTLDR message. I have tried multiple ways to fix this problem and researched it on the internet quite a bit but to no avail. My computer must boot through my drive with XP on it, then it loads my Vista bootloader and things are good from there. What I don't understand is why it is looking for NTLDR in the first place as it should ignore NT's bootloader in favour of Vista's should it not?