Miguel Medalha wrote:
Also, the drive itself can be defective. I once received two new WD high end drives that couldn't be detected by any controller and I had to return them. The new ones worked fine.
Thanks for all your help, and to the others who advised me.
I found that the drive worked in the end - I'm not sure what did the trick, I sprayed the contacts with Contact Cleaner, changed the drive to a different bay, took the drive out of its tray and re-installed it using Torx screws (though I'm sure the last made no difference).