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Mac OS X succeeded classic Mac OS, the primary Macintosh operating system from 1984 to 2001. Its underlying architecture came from NeXT's NeXTSTEP, as a result of Apple's acquisition of NeXT, which also brought Steve Jobs back to Apple. The first desktop version, Mac OS X 10.0, was released on March 24, 2001.
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 ...
Rhapsody built on NeXTSTEP, porting the core system to the PowerPC architecture and adding a redesigned user interface based on the Platinum user interface from Mac OS 8. An emulation layer called Blue Box allowed Mac OS applications to run within an actual instance of the Mac OS and an integrated Java platform . [ 1 ]
Precursors to Mac OS X include OPENSTEP, Apple's Rhapsody project, and the Mac OS X Public Beta. macOS is based on Apple's open source Darwin operating system, which is based on the XNU kernel and BSD. [14] macOS is the basis for some of Apple's other operating systems, including iPhone OS/iOS, iPadOS, watchOS, tvOS, and visionOS.
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.
Mac OS X v10.2.8 7.0 October 24, 2003 Mac OS X Panther: Mac OS X v10.3.0 BSD layer synchronized with FreeBSD 5; Automatic file defragmentation, hot-file clustering and optional case sensitivity in HFS+; Bash instead of tcsh as default shell; Read-only NTFS support (Darwin 7.9) [29] 7.9 April 15, 2005 Mac OS X v10.3.9 8.0 April 29, 2005
HFS Plus or HFS+ (also known as Mac OS Extended or HFS Extended [5]) is a journaling file system developed by Apple Inc. It replaced the Hierarchical File System (HFS) as the primary file system of Apple computers with the 1998 release of Mac OS 8.1.
FreeBSD based firmware for embedded devices ULBSD: ULBSD is a Unix-like, desktop-oriented operating system based on FreeBSD. It aims to be easy to install and ready-to-use immediately by providing pre-installed graphical KDE5 user desktop environment. ravynOS (formerly airyxOS) ravynOS is a FreeBSD-based OS aimed at providing "the finesse of ...