https://github.com/rcl9/How-to-Create-C ... le-Formats
This retro-computing tutorial explains in detail how to create CP/M boot disks from scratch in the IMG, IMD and HFE file formats from a collection of files on a PC computer. In particular it handles the case of "mixed-mode track geometry" whereby track 0 is in single density (FM) and tracks 1+ are in double density (MFM). For this tutorial the target is the Morrow DiskJockey 2D disk controller (attached to a HxC 8" floppy disk emulator) on an Exidy Sorcerer computer with an S-100 expansion bus. The provided script will also insert from a number of provided system boot images for this hardware setup.
You can also find 41 new retro-computing tutorials I've written from my 1980s development work. I have a landing page with visual cues to choose from:
https://github.com/rcl9
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