Miguel Medalha wrote: > The WD is a SATA3 drive (6gb/s). Are you sure that your motherboard > supports SATA3 drives? Maybe SOME ports support them while others do > not? If not, can you force the WD to operate in a lower mode? Some > drives can, either by hardware or software. Thank you very much for your lucid explanation, which has clarified the issue greatly in my mind. I was indeed completely ignorant of the basic facts about SATA drives, since in my (limited) experience they simply worked when installed. The two HP MicroServers I have are both N36L models, 3 years old. I had better check if these do support SATA3 drives. -- Timothy Murphy e-mail: gayleard /at/ eircom.net School of Mathematics, Trinity College, Dublin 2, Ireland