Image gallery: 10 'gone but not forgotten' OSs

AmigaOS, CP/M, OS/2, DOS -- which operating system do you miss the most?

This gallery accompanies our story Gone but not forgotten: 10 operating systems the world left behind; please click through to that story to read the full text. Many thanks to the Personal Computer Museum, GUIdebook, Amiga Future and Wikimedia Commons for providing images.

CP/M was there at the beginning of the personal computing revolution, giving us the command line options we came to know and love and providing a template for two decades of DOS variations.

Shown here: CP/M-86 Version 1.0 running on an original IBM PC 5150 (top left and right); CP/M 2.2 on an Osborne 1 (bottom left); CP/M 2.2G on a Kaypro 10 (bottom right).

CP/M operating system running on old computers.

Credit: Personal Computer Museum

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