My friend asked me to fix his computer after it would not boot up. after asking some questions, I came to the conclusion that the hard drive must have crashed and told him that I would try to run diagnostics and repair the drive from my computer. My only problem is that I think it might harm my system because win7 might for some reason be confused with the win8 drive. I've heard that you can't create a folder named "con" or "aux". If this is true, how will my computer react when another drive does have those folders? I just want to know if this is safe. Thanks for any answers.