I have a very annoying problem with my new SATA setup. I have an oldish Epox 8kHA+ Mobo I have installed an Adaptec AAR-1210SA SATAConnect Serial ATA Controller and a Western Digital Caviar Special Edition 320GB 3200JD SATA HDD. Running XP SP2. My first shipped WDD SATA had to be RMA's as it went up in a puff of smoke. This second one has been working fine for 2 days but now when I reboot, it has vanished under windows. This happened once last night but a shut down, power off and on and power up and it was back. Today, not so lucky. I can see the drive in the Adaptec SATA POST screen. so the controller is seeing it connected so it seems a Windows problem. I also initially had a Western Digital Secure Connect Serial ATA Cable but when I replaced this with the generic SATA cable that came with the controller it seemed more stable (this was before my first drive went off for a smoke break!) I have installed the latest Adaptec driver driver and also tried the latest beta driver but no difference. Any ideas?