Bit of a strange one, this. My wife has a black MacBook that's approx 12 months old, and the stock 160gb HDD has started to fail. I've purchased a new disk, a Western Digital WD3200BEVT, which judging by reviews online, should work fine in a MacBook. So I fitted the new HDD and booted off the restore DVD, but the new HDD was not seen by Disk Utility. However, it appeared in System Profiler, and identified correctly. I put the drive in an external USB SATA enclosure, and it was picked up without a problem by Disk Utility on my iMac. I formatted it as HFS+ with GUID, and put the drive back in the MacBook. Still nothing. Anyone got any ideas? Really scratching my head here.