The computer was originally installed with Win98 and then someone went ahead and installed WinXP onto the same partition. So now the HD as two OS. The owner wants to go ahead and just wipe the HD and then re-install WinXP as the only OS. Can I go ahead and do this the normal way of popping in the XP disk and reformatting it that way? Or should I do it through the bios and fdisk it first?