Okay, so basically im getting a new pc in a week. It comes with a M.2 1TB SSD and I was wondering, if I could install Windows 10 (from a USB pendrive) on that M.2 like normally, and after everything installs, add my 2 old HDD's to the build. I wonder if the fact that one of them has Windows files wouldnt make some colission and possibly corrupt some files. So im asking if its safe to do that?