WD has a dos program like Maxblast too. However it does not give me the option to choose which OS to install. And after the end of the reformat, it gives no instruction to how to install OS.
Don't criticize something just because you don't know how to use it. Anyway, you don't need any DOS programs. Why would you install DOS anyway? All newer versions of XP have done away with it. Just insert the XP installation disc and wait for it to boot. Simple as pie.