Hmm, I can't speak for winmfs, but those may not be compatible with the WD Diags. When I'm using the manufacturer's diagnostic tools, I usually opt for the DOS version loaded onto a bootable CD. It boots and runs faster, IME. For testing SATA drives, I use a SATA->IDE adapter and it works fine. If you've got SATA ports on your motherboard, those should work too. I've found that sata PCI cards and USB adapters never work with the DOS diagnostics though.