Actually the version of DOS installed on XP is not the full version of DOS it does not have all of the comands that the full version of DOS has. And to get the full version you have to download it from a website like www.download.com then, copy it to a flopy, then you will have to install it before you install a operating system. So if you wan't the full version download it delete you're old OS then install the newest DOS before you Install you're new OS and it SHOULD default to the newest version of DOS and not eaven install the XP version.