Mac OS 9

Mac OS 9
Version of Mac OS
CodenameSonata (9.0), Minuet (9.0.x), Fortissimo (9.1), Moonlight (9.2), Limelight (9.2.1), LU1 (9.2.2)
Preliminary name
Latest build
Release date1999-10-23
Support end2002-02-01
Mac OS 8
Replaced by
Mac OS X Public Beta
Mac OS X Cheetah (10.0)

Mac OS 9 is the final incarnation of the classic "Mac OS". Codenamed Sonata for its initial revision, it boasted many new Internet-based features. OS 9, like its predecessors, lacked protected memory and full pre-emptive multitasking. Development of Mac OS 9 ceased during 2001. The final updates are fixes for compatibility issues with the "Classic" environment.

List of known builds[edit | edit source]

8.7 (9.0 Beta)[edit | edit source]

9.0 (Beta)[edit | edit source]

9.0[edit | edit source]

9.1 (Beta)[edit | edit source]

9.1[edit | edit source]

9.2 (Beta)[edit | edit source]

9.2[edit | edit source]