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AT&T Unix PC floppy images

Open cb88 opened this issue 3 years ago • 1 comments

They just use a standard 10 or 8 sector 5.25in IBM floppy with a cpio image on the disk usually instead of a fat filesystem.

I see other people are having some success with reading similar disk formats so I'll have to give this a try and upload a a few images for you to inspect here once I've assembled a fluxengine. Would it be possible to detect the number of sectors if you know the machine type ahead of time?

I'd really like to have a tool to image disks and get data onto and off of my system that way (probably link it up via serial later after I get some software onto it).

cb88 avatar Jun 11 '21 15:06 cb88

Yes, the IBM reader (fluxengine read ibm) will autodetect nearly everything and figure out the format. The one thing it can't know is whether the start sector ID is 0 or 1 --- you'll need to set this via --decoder.ibm.sector_id_base. Once determined, adding a profile for the Unix PC is easy; see src/readables/acornadfs.textpb. (In fact, if the start sector ID is 0 you can probably just use the acornadfs profile.) Let me know if it works; adding support for this would be great!

davidgiven avatar Jun 11 '21 20:06 davidgiven