Part 4 of the disk revival project: validating a DOS 3.3 image by following the same pointers DOS follows, from the VTOC and catalog chain to every file's last sector.
~~~ FIELD NOTES · ARCHIVING · RESTORATION · EMULATION ~~~
A methodical journey through recovering, validating, and archiving 40-year-old Apple II floppy disks
Part 4 of the disk revival project: validating a DOS 3.3 image by following the same pointers DOS follows, from the VTOC and catalog chain to every file's last sector.
Part 3 of the disk revival project: a single ADT Pro pass is a sample, and real evidence comes from repeated reads.
The printing press, the internet, and AI each made one step of working with information dramatically cheaper. The pattern is old, and the bottleneck keeps moving.
Part 2 of the disk revival project: getting bits from the Apple II to the PC with a seriALL card, a Floppy Emu, and two drives.
What happens when AI is a good programmer but not a software engineer, and it also makes experimentation cheap.
Field notes from the disk revival project: 173 forty-year-old Apple II floppies, a broken drive, and a tool to make sure the archive never quietly ships bad data.
READ PART 1: Archiving, Validating and Repairing Apple ][ Disks