If you are just going to re-install Windows XP on the hard drives, then use the format and recover option. It will re-format your dard drive erasing everything then it will install Windows XP on it.
I have a couple of old hard drives that I would like to erase and re-install windows xp on them. I don't have any information on the hard drives that needs to be saved. How do I go about formatting the hard drive to it's original clean slate?