It Boots Again

Trial version. This site is still being built, so the list and the name may change. About

Hobbyist or repairer · for some experience

Using the Greaseweazle as a powerful disk drive diagnostic tool

Adrian's Digital Basement 53 min Published Aug 2026

About this video

Failing floppy drives are routine on retro computers, and the Greaseweazle running GW-DIAG is used to test them, including a Panasonic JU-475 and a Shugart SA-400.

Good to know: Needs a Greaseweazle. Updates on Mac and Linux support are in a pinned comment.

Why watch it

Chapter markers split the video into Greaseweazle basics, GW-DIAG and two drive sessions, so a reader can jump to the Panasonic or Shugart section. The GW-DIAG software is linked on GitHub.

On the same topics