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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 ...
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 ...
At first glance, Catalina falls into that bucket. As has often been the case, some features from iOS have been ported over to the Mac, including major updates to the Photos, Notes and Reminders apps.
Apple's (AAPL) latest version of desktop operating system software MacOS Catalina comes with new apps and features and addresses security breaches and other issues.
macOS Big Sur (version 11) is the seventeenth major release of macOS, Apple's operating system for Macintosh computers. It was announced at Apple's Worldwide Developers Conference (WWDC) on June 22, 2020, [4] and was released to the public on November 12, 2020. [5] [4] [6] Big Sur is the successor to macOS Catalina (macOS 10.15).
The first version of Mac OS X, Mac OS X Server 1.0, was a transitional product, featuring an interface resembling the classic Mac OS, though it was not compatible with software designed for the older system. Consumer releases of Mac OS X included more backward compatibility.
The classic Mac OS is the original Macintosh operating system introduced in 1984 alongside the first Macintosh and remained in primary use on Macs until Mac OS X in 2001. [ 6 ] [ 7 ] Apple released the original Macintosh on January 24, 1984; its early system software is partially based on Lisa OS , and inspired by the Alto computer, which ...