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OS X El Capitan (/ ɛ l ˌ k æ p ɪ ˈ t ɑː n / el KAP-i-TAHN) (version 10.11) is the twelfth major release of macOS (named OS X at the time of El Capitan's release), Apple Inc.'s desktop and server operating system for Macintosh.
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 Server 10.5 – also marketed as Leopard Server; Mac OS X Server 10.6 – also marketed as Snow Leopard Server; Starting with Lion, there is no separate Mac OS X Server operating system. Instead the server components are a separate download from the Mac App Store. Mac OS X Lion Server – 10.7 – also marketed as OS X Lion Server
Like OS X El Capitan and OS X Mountain Lion, High Sierra is a refinement-based update having very few new features visible to the user, including updates to Safari, Photos, and Mail, among other changes. [225] The major change under the hood is the switch to the Apple File System, optimized for the solid-state storage used in most new Mac ...
Mac OS X 10.4 Tiger: Mac OS X 10.5 Leopard: Latest release Mac OS X 10.6.8 Snow Leopard (If only 512 MB RAM are installed, then only 10.5.8) Mac OS X 10.7.5 Lion (If only 512 MB or 1 GB RAM are or is installed, then only 10.5.8 or 10.6.8 respectively) Mac OS X 10.7.5 Lion (If only 1 GB RAM is installed, then only 10.6.8) OS X 10.11 El Capitan ...
The internal codenames of Mac OS X 10.0 through 10.2 are big cats. In Mac OS X 10.2, the internal codename "Jaguar" was used as a public name, and, for subsequent Mac OS X releases, big cat names were used as public names through until OS X 10.8 "Mountain Lion", and wine names were used as internal codenames through until OS X 10.10 "Syrah".
Mac OS X is built on Darwin, a Unix-like operating system derived from FreeBSD. Darwin includes a new kernel, XNU, derived from Mach and BSD, as a replacement for the Mac OS nanokernel used in classic Mac OS. Unlike Mac OS 9, Mac OS X has protected memory and preemptive multitasking. This means that if an application's memory becomes corrupted ...
Mac OS X 10.1 (code named Puma) is the second major release of macOS, Apple's desktop and server operating system. It superseded Mac OS X 10.0 and preceded Mac OS X Jaguar . Mac OS X 10.1 was released on September 25, 2001, as a free update for Mac OS X 10.0 users.