Installing XP on an Octiplex 755

Similar problem to what I ran into on the D630's. XP just doesn't like the new AHCI mode for SATA controllers. Go to BIOS -> Drives -> SATA Operation and change it to RAID Autodetect/ATA mode instead. Of course, this only affects you if you bought the desktop with the "Vista" operating system preloaded. For now it just makes better financial sense to buy it with Vista and take liberal use of downgrade rights until we're ready for a full rollout.