I have two hard drives that I moved to a new computer. Neither has Windows on it. Both have content (to include applications) because I used them on a previous computer as adjunct drives. Now I purchased a new copy of Windows XP Home version for the new computer (I still have the “old” computer in use and therefore the “old” copy of Windows XP. If I install XP Home on one of the two drives will it overwrite all that is on it?