16 votes
Accepted

What exactly was the intent and implementation of Apple DOS 3.3's volume concept?

I'm curious what the intent and actual implementation of the feature was. It's meant to identify diskettes. Much like volume names on DOS or similar on other OS. In fact, Apple DOS was ahead, as ...
Raffzahn's user avatar
  • 220k
8 votes
Accepted

How to change what program Apple ProDOS 'starts' when booting

Sorting the root directory to put the desired .SYSTEM program first will fix the issue. You can sort a directory on a ProDOS disk with the ProSel-8 disk utilities or Copy II+. You can also just ...
fadden's user avatar
  • 9,020
6 votes

What is the VTOC format for an AppleDOS disk with more than 50 tracks?

Summary of comments, plus analysis of "appleii640.img.gz" from the github issue page... This is an 80-track, 16-sector disk. The interpretation of the sector in-use map in the DOS VTOC was ...
fadden's user avatar
  • 9,020
5 votes
Accepted

How Can Apple II DOS 3.3 Floppy Disks be Restored after Formatting with INIT?

The INIT command directs the drive to move the head to each of the first 35 tracks in turn, and overwrite the entire contents thereof. In performing this process, the drive uses two coils: an erase ...
supercat's user avatar
  • 35.7k
4 votes

How to change what program Apple ProDOS 'starts' when booting

I would be astounded if the answer is to "delete everything and add files in the correct order" Jup, that's 'a' solution :)) ProDOS only expects a single SYSTEM to exist on the boot volume. ...
Raffzahn's user avatar
  • 220k

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