I am running, or was running, XP Pro and installed Win2000 to a second Partition. Is there a way that I can boot back to WinXP? I get the option to select XP but it errors out. It tells me I can attempt to repair this file by restarting Windows 2000 by using the set up CD and selecting 'r' for repair. Do I have to format to get XP back up and running? I need 2000 for 1 application and am using XP for all the rest.