How can I stop Windows XP from reassigning drive letters at start-up? HP PC w/ hard drive partitioned for C: and D:, CD writer and DVD-rom (E: and F:), four-slot card reader (G:, H:, I:, J:), and external hard drive K:. External drive reconfigured as G: at latest boot, which causes problems for any programs looking to that drive for data files. Any help would be appreciated.