Infinite Mac won't run later releases of classic Mac OS (including 8.5, 8.6, and 9) because those releases ran exclusively on PowerPC Macs, dropping support for the old Motorola 68000-based ...

The current Mac operating system—which launched in 2001, 23 years ago, as Mac OS X—has been around longer than the "Classic" OS, which Apple offered for a total of 16 years.

Parparita created two emulators of vintage Mac operating systems, one for System 7 and another for System 8. The emulators are web-based so you can run them in a browser on any modern Mac.

Mac OS X 10.0 (“Cheetah”) March 24, 2001, marked the first official release of the Mac OS X operating system, following a public beta the year before.

Microsoft's Windows 8 video was intended to highlight the new ability of the future operating system to mount and eject volumes, similar to Mac OS X's disk image mounting of .dmg or .iso files or ...