Windows XP Pro x64
WD AV-GP 2 TB AV Video HD, SATA II, 64 MB Cache - WD20EURS
I purchased 2 of these hdds a few months ago, connected them to my mobo and they immediately showed up in MyComputer and Disk Management, no other steps were necessary.
I recently purchased 2 more of these hdds, connected them to my mobo 1 at a time. Neither of the hdds show up under MyComputer or Disk Management.
I tried using different cables and different ports on my mobo to no avail.