Ill try to explain this as best I can. I have 2 Windows OS installed on 2 different hard drives in my pc and get the option for choose which OS I want to boot when I turn on my pc. Drive 1 is the first drive I installed an OS on and drive 2 the second. I'm pretty sure drive 1 is dying so my question is, is drive 2's OS boot linked to drive 1 and if so, is there a way to boot from drive 2 instead of drive 1? What I am afraid of is drive 1 failing completely and then not being able to boot into Windows on drive 2.