Converting imz floppy disk images
Softwareimz files were a popular way to distribute floppy disk images in the 1990s and 2000s, owing to their smaller size. Like cbz comic files and the handsome pair of chinos I’m wearing now, they’re zipped.
To convert to a raw disk image, use a tool like unzip(1) in the shell, or append a zip extension and use a graphical decompression tool. You can then rename the file to a regular img, and mount as normal.
Related to my DOS organising project, I’ve been cataloguing and archiving all my disk and CD images in a spreadsheet. Part of this has been unzipping all these IMZ files to make them easier to use. They’re on a compressed OpenZFS pool anyway, so may as well.