Hi, I'm not running XP right now so I can't check it out, but I'm pretty sure that I was able to get into DOS from XP with "RUN Command.com". That's DOS under XP. F8 and comand mode is pure DOS, but I don't think XP has it. If the drive is NTFS the Win98 boot wont be able to read the HD. What is it that you want to do? Jim