I recently purchased a new computer, with Windows 8.1. Yet I also want to install the hard drive of the computer it's replacing, while keeping the data still on it. I was wondering, even though the previous computer used Windows 7, how would I be able to install the old hard drive into the new computer as a secondary storage system, without losing any data? Do I just put it in like any other hard drive, or is it easier to use one of those external docks and USB? I really would like to know.