https://hackaday.com/2024/08/27/exploring-pc-floppy-protection-formaster-copy-lock/
Exploring PC Floppy Protection: Formaster Copy-Lock | Hackaday
Sep 17, 2024 - [GloriousCow] has started working on a series of investigations into the various historical floppy disk copy protection schemes used in the early days of the...
pc floppyexploringprotectionformastercopy