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macOS Catalina (version 10.15) is the sixteenth major release of macOS, Apple Inc.'s desktop operating system for Macintosh computers. It is the successor to macOS Mojave and was announced at WWDC 2019 on June 3, 2019 and released to the public on October 7, 2019.
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 ...
Download QR code; Print/export ... It was called by Apple "the largest update of Mac OS X". ... macOS 10.15 Catalina was released on October 7, 2019. ...
Similar to Sonoma, the 2019 iMac is the only supported Intel Mac that lacks a T2 security chip. macOS Sequoia is the first version of macOS to drop support for a Mac with a T2 security chip. The following devices are compatible with macOS Sequoia: [3] iMac (2019 and later) iMac Pro (2017) MacBook Air (2020 and later) MacBook Pro (2018 and later)
It could be set to check for updates daily, weekly, monthly, or not at all; in addition, it could download and store the associated .pkg file (the same type used by Installer) to be installed at a later date, and it maintained a history of installed updates. Starting with Mac OS X 10.5 Leopard, updates that required a reboot logged out the user ...
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 ...
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".
In June 2006, an updated MacBook Pro was released for the 10.4.7 Mac OS X update for non-Apple computers using the 10.4.4 kernel. Up to the release of the 10.4.8 update, all OSx86 patches used the 10.4.4 kernel with the rest of the operating system at version 10.4.8.