Quote:
Originally Posted by HarryT
Ever since the days of XP, Windows has had the capability of running different "subsystems" to implement different API sets. Eg, XP had a POSIX subsystem, although I can't recall ever seeing it used for anything practical.
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Windows XP does not have the POSIX and OS/2 subsystems anymore (POSIX can be re-added by installing Windows Services for Unix). They were available from Windows NT 3.5x up to and including Windows 2000.