I have just bought a Seagate 4TB Desktop HDD, although the description on ebay said it was NAS. I found elsewhere on this forum that an NAS can run as an internal drive. I connect up and windows installed the drivers for the drive, but I cannot find the drive in My Computer which is running 7, 64Bit. I have rebooted pc and still not showings. All my other drive...USB and Internal. Do I have to have a NAS storage device?