We support operating systems that not even Microsoft and Apple themselves support anymore, such as macOS X on PowerPC Macs, and RetroArch being available on Windows OSes as far back as Windows 95. on Windows Vista guests due to limitations of the emulated video hardware. RetroArch can run on the usual platforms like Windows, Mac OS X and Linux, but it stands alone in that it can support far more platforms beyond just that. Older versions of Virtual PC for Macintosh can run on Mac OS 9.2.2 or earlier.
