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The history of macOS, Apple's current Mac operating system formerly named Mac OS X until 2011 and then OS X until 2016, began with the company's project to replace its "classic" Mac OS. That system, up to and including its final release Mac OS 9, was a direct descendant of the operating system Apple had used in its Mac computers since their ...
Mac OS X Panther: October 24, 2003 Version 10.3; Macintosh computers (PowerPC and x86) Mac OS X Tiger: April 29, 2005 Version 10.4; Mac OS X Leopard: October 26, 2007 Version 10.5; Macintosh computers Mac OS X Snow Leopard: August 28, 2009 Version 10.6; Mac OS X Lion: July 20, 2011 Version 10.7; Also marketed as OS X Lion; OS X Mountain Lion ...
The system was originally marketed as simply "version 10" of Mac OS, but it has a history that is largely independent of the classic Mac OS. It is a Unix-based operating system [11] [12] built on NeXTSTEP and other NeXT technology from the late 1980s until early 1997, when Apple purchased the company and its CEO Steve Jobs returned to Apple ...
Support for Macintosh clones was first exhibited in System 7.5.1, which was the first version to include the "Mac OS" logo (a variation on the original Happy Mac startup icon), and Mac OS 7.6 was the first to be named "Mac OS" instead of "System". These changes were made to disassociate the operating system from Apple's own Macintosh models.
The system was included with Mac OS X versions up to version 10.6.8. [131] Apple dropped support for Classic mode on the new Intel Macs. Third party emulation software such as Mini vMac, Basilisk II and SheepShaver provided support for some early versions of Mac OS.
The README file included with the installation disks for the SE and II is the first place Apple ever used the term "Macintosh System Software", and after 1998 these two versions were retroactively given the name "Macintosh System Software 2.0.1". [7]
System 7 (later named Mac OS 7) is the seventh major release of the classic Mac OS operating system for Macintosh computers, made by Apple Computer.It was launched on May 13, 1991, to succeed System 6 with virtual memory, personal file sharing, QuickTime, TrueType fonts, the Force Quit dialog, and an improved user interface.
Mac OS 8 is the eighth major release of the classic Mac OS operating system for Macintosh computers, released by Apple Computer on July 26, 1997. [2] It includes the largest overhaul of the classic Mac OS experience since the release of System 7 , approximately six years before.