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At macOS's core is a POSIX-compliant operating system built on top of the XNU kernel, [81] (which incorporated large parts of FreeBSD kernel [14]) and FreeBSD userland [14] for the standard Unix facilities available from the command line interface. Apple has released this family of software as a free and open source operating system named Darwin.
The original operating system for the Macintosh was the classic Mac OS, which was introduced in early 1984 as System Software. In 1997, System Software was renamed Mac OS. In 1999, Mac OS X Server 1.0 was released, followed by Mac OS X 10.0, the first consumer release of the Mac OS X.
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 ...
macOS Sonoma supports Macs with Apple silicon and Intel's Xeon-W and 8th-generation Coffee Lake/Amber Lake chips or later, [25] and drops support for various models released in 2017, officially marking the end of support for Macs without Retina display and the 12-inch MacBook. The 2019 iMac is the only Sonoma-supported Intel Mac that lacks a T2 ...
How to find the operating system for an Apple Mac. Click on the Apple Logo: In the top-left corner of the screen, click on the Apple logo. This is usually located on the menu bar.
XNU ("X is Not Unix") is the computer operating system (OS) kernel developed at Apple Inc. since December 1996 for use in the Mac OS X (now macOS) operating system and released as free and open-source software as part of the Darwin OS, which, in addition to being the basis for macOS, is also the basis for Apple TV Software, iOS, iPadOS, watchOS, visionOS, and tvOS.
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 ...
MacBook is a brand of Mac notebook computers developed and marketed by Apple that use Apple's macOS operating system since 2006. The MacBook brand replaced the PowerBook and iBook brands during the Mac transition to Intel processors , announced in 2005.