OK I have an old HDD which is my main one, my C. I just got a new Raptor and I want to make it C, and make the one I have now something else. So I'm going to instal Vista 64 bit on my new HDD. Can I boot with two "C" disks? How will it know which one to boot from? Once I get into windows I'm going to reformat the old one, just not sure how to go about it. :S