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Re: Writing Apple IIgs Disks on a PC



Tempest wrote:
Is there a way to write Apple IIgs disk images to disks using a PC?

For 1440K images, yes. You can read and write them on the PC side with CiderPress. You'll need a SuperDrive on your IIgs to use them, though.

For 800K images, no. Unlike Atari disks, the Apple 800K low-level "GCR" format is too different from the PC "MFM" format. In PCs it's unfortunately not possible to "speak" to the floppy drive directly, only through the MFM controller, and that chip can't write GCR encoded disks, as far as is known.

You'd need to use a "Catweasel" controller in your PC if you want to handle Apple 800K disks with it. That's a special floppy controller that allows reading and writing many floppy formats in standard PC drives. A web search will turn up more info.

Unfortunately nobody has written an 800K ADT program yet, although there's nothing to prevent this. You could compress the disk images though, in an emulator such as KEGS, with ShrinkIt. Then send them to the IIgs with a pair of comm programs, and there Unshrink them.

Another possibility is using a circa 1990-1995 vintage Macintosh as an intermediary. Those can deal with both 1440K PC floppies and 800K IIgs floppies.

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Linards Ticmanis