Win7 and WinXP dual boot

My dual boot system WinXP/Win7 got really Messed up. I am stil getting it straighten out. I got an error and neither operating system would boot up. It was really screwed. I almost have the system fixed. I do not yet have Win7 back running though...

What happens is that when I installed Win7 RC, I put it on a seperate hard drive, clean install. I have WinXP Pro on another hard drive. When my computer boots, I press F11 and choose the hard drive I want, and then I choose the operating system.

I have been running Win7 for about 1 month now... maybe longer... This was the first incident that was serious. Maybe the only incident. I h ave been using Win7 for flight simulators.

It appears the Boot loader file got corrupted when I restarted and switch from Win7 RC x32 to WinXP Pro and go the errors. I didn't have a have a WinXP bacjup file ready to use. So, I disconnected my Win7 disc, restarted the computer and reloaded Windows XP Pro over the Windows install. No problems after that.

I did look up the fix for a corrupted Boot loader file. I keep a copy of those intructions now. If I do make a WinXP Pro Backup.bkf file, it will be about 86 GB in size. That would need a whole Hard drive just to put that on. I don't have enough room on my current hard drives, so making that file is out of the question. if I did make that file I would burn it to a dvd disc to keep as a backup. But first need to mkae it before I could burn it to the disc.