I just added a second hard drive to my 3 year old HP Pavilion with Windows XP Home. I followed the directions in the original manual for adding a hard drive. The jumper is set on cable select as specified. (I also tried it on slave). The hard drive shows up in the device manager as operating properly. It also shows up in the BIOS as installed hardware. The problem is it does not show up in My Computer or Explore. I can't access it to format and begin using it. Any ideas?