I installed Win 7 originally on Dec 9th. By Jan 4th I couldn't get one printer to work, so I had read that Win 7 Pro would allow me to run the device on a virtual XP platform. I upgraded and quickly realized I was in over my head. I have installed my old HD along with the new one and now I need to reinstall Win 7 Home Premium. I backed up ALL my files on my old HDD (recommended by microsoft) If I reinstall the Win 7 Home will it wipe all my files on both C & D (the old disk) drives, excluding the backup?