Sorry about that...the idea of having an OS-less "C:" was so either boot'ed partition couldn't see the other. I've since learned that multiple partitions can be defined "primary" (which I didn't...

I have a laptop that's almost a year old and I've been getting some lag playing games on it. I want to have two copies of Windows on it, one for normal usage (henceforth called "C:"), the other for...