I've been messing around with a couple of older drives, one of which is a WD Caviar 21200 in both a USB drive enclosure and a IDE to USB adapter and explorer in W2K doesn't recognize it. Under Computer Management it does not appear in Disk Management, but shows under Disk Drives in Device Manager. It also shows up under the USB unplug or eject hardware. I have checked the drive and it is good. Jumper set to master. Thanks in advance for any ideas!