Converting imz floppy disk images


imz 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.

Icon of a floppy disk, from the Tango Desktop project

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.

Author bio and support


Ruben Schade is a technical writer and infrastructure architect in Sydney, Australia who refers to himself in the third person. Hi!

The site is powered by Hugo, FreeBSD, and OpenZFS on OrionVM, everyone’s favourite bespoke cloud infrastructure provider.

If you found this post helpful or entertaining, you can shout me a coffee or send a comment. Thanks ☺️.