I saw the pinned post by John35 about hard drive diagnostic utilities and have a question. I have a Toshiba laptop that will not boot. Long story. I removed the hard drive and would like to use my hard drive enclosure to test it via another PC. It connects via USB. On the Toshiba site they show diagnostic utilities for Fujitsu drives. The hard drive shows no labeling that indicates it is a Fujitsu drive, only Toshiba labeling. Are Toshiba hard drives made by Fujitsu? Very confused.