I have two internal hard drives [a 80GB IDE (which is the C: drive) and a 300GB SATA (which is the D: Drive)] the 80GB had a trial of Win7 Ultimate and the 300GB currently has the full version of Win 7 Professional. I wanted to try and run a dual boot system with Vista and my Win7 Pro OSs, but when i installed Vista, it didnt come up with the dual boot options menu before loading the OS. Both systems run fine if i disconnect one drive or the other. How do i connect these drives to perform a Dual boot system???