Rather than partitioning my "C" drive that has Win XP, I'd like to install Win 7 on another physical drive ("E"). After I get all my docs & settings transferred over to 7 I'd like to then get rid of XP assuming that 7 is still working ok. My question is, how will this work? After I remove XP and make my "E" drive the primary boot drive, does it stay "E" or does the BIOS rename it to "C" and screw up all the programs that are referenced to "E" in the registry? I always thought that an OS had to be on the "C" drive. Wrong? Sorry for all the new threads, but as I learn more from you guys (and Google), I keep coming up with new questions!