What HDD are you trying to format? What is the brand of the HDD? If it is the master than XP is running on then it will not be able to format. If it is a slave then you should be able to format it. The best way to format would be to use the manufactures program that came with it. If you don't have that you can download it from their website.
A forum community dedicated to tech experts and enthusiasts. Come join the discussion about articles, computer security, Mac, Microsoft, Linux, hardware, networking, gaming, reviews, accessories, and more!