I have back up my hard drive to an external drive. My hard drive went bad and I replaced it. I have reinstalled one care, and set the externa hard drive as the back up for the new hard drive. I now go to one care to restore the files to the new hard drive, but the restore does not "see" the external hard drive. I can see the external hard drive on my computer. I have rebooted several times, and turned it on/off, and one care still does not "see" it, just gives me the option of using the CD/DVD as the source for back up.