Hello, I recently downgraded from vista to xp pro and during the downgrade i unplugged a 400 gb hard drive that i use only for storage. after a clean install of xp pro i plugged in the drive and while booting i get a wierd dos looking screen that says vista cant load or something of that nature. i unplug the drive and viola xp loads. this is just a back up drive with nothing but music and pictures on it. could vista have written something to the drive i cannot see? format is not an option. if i plug it in after xp loads it works great and i can access the drive perfectly. thanks in advance for any help.