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35 lines
980 B
Markdown
35 lines
980 B
Markdown
Disk: Acorn DFS
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===============
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Acorn DFS disks are pretty standard FM encoded IBM scheme disks, with
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256-sectors and 0-based sector identifiers. There's nothing particularly
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special here.
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DFS disks are all single sided, but allow the other side of the disk to be
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used as another drive. FluxEngine supports these; read one side at a time
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with `--heads 0` or `--heads 1`.
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DFS comes in two varieties, 40 track and 80 track. These should both work. For
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40 track you'll want `--cylinders 0-79x2`. Some rare disks are both at the same
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time. FluxEngine can read these but it requires a bit of fiddling as they have
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the same tracks on twice.
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Reading discs
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-------------
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Just do:
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```
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fluxengine read acorndfs
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```
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You should end up with an `acorndfs.img` of the appropriate size for your disk
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format. This is an alias for `fluxengine read ibm` with preconfigured
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parameters.
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References
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----------
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- [The Acord DFS disc format](https://beebwiki.mdfs.net/Acorn_DFS_disc_format)
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