I have two h/d's in my computer, each with XP. One h/d I use to try out software and I don't mind if it gets "cluttered" with old programs and files. The other h/d is a "clean" version of XP that I use for every day use. The way I boot into each h/d, is that I reboot the computer, and when its booting up, go into the bios, and change the boot device from HD0 to HD1, or vice versa. Is there a boot program out there I could install onto one of my h/d, so at boot time I could tell it which h/d to boot into instead of having to change the bios all the time?