To the topic starter: Don't know to which channel you have the WD connected and if there is another IDE device on that channel, but if it's slaved to some other drive try setting the master as the master and this HD as slave instead of using cable select. If it's the only drive on the channel use it as master which is no jumper at all as shown in your picture. A while ago when the 120GB WDs came on the market there was some confusion about the jumpers, most people jumpered it as master while you actually have to remove any jumpers for master only configs.