I have an older desktop system that I want to upgrade from XP to Win7. I think the existing hard drive might be bad as I am unable to get Win7 to install. I would like to temporarily swap out for a different hard drive in order to see if Win7 will successfully install on the other drive. I want to preserve the existing drive so that I can swap it back in after testing the other drive. Do I just simply power down the system and remove the existing drive and then put in the other drive for testing the Win7 install? Do I then just repeat the process to put the original hard drive with XP back in after testing the other? I was just wondering f there were any other steps involved in order to do this.