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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 allows users to configure their network preferences, assign Back to My Mac accounts to the network, and configure USB attached Printers and hard drives. [49] The current versions are 6.3.6 for recent versions of macOS , 5.6.1 for Microsoft Windows and older versions [ 50 ] of Mac OS X, [ 51 ] and 1.3.4 for iOS .
It Introduces "Dexts" (Driver Extensions) which are built using DriverKit. Driverkit is a new SDK with all new frameworks based on IOKit, but is updated and modernized. Device Drivers run in userspace, outside of the kernel. [36] [37] [38] 19.4.0 March 24, 2020 19.5.0 April 30, 2020 macOS 10.15.5 and iOS 13.5 19.6.0 June 1, 2020
macOS 10.15 Catalina was released on October 7, 2019. [227] Updates included enhanced voice control, and bundled apps for music, video, and podcasts that together replace the functions of iTunes, and the ability to use an iPad as an external monitor. Catalina officially dropped support for 32-bit applications. [228]
Bonjour locates devices such as printers, other computers, and the services that those devices offer on a local network using multicast Domain Name System (mDNS) service records. The software comes built-in with Apple's macOS and iOS operating systems. Bonjour can also be installed onto computers running Microsoft Windows.
Apple strengthened Mac OS X by implementing stack protection, and sandboxing more Mac OS X components such as the H.264 decoder in QuickTime and browser plug-ins as a separate process in Safari. [61] Secure virtual memory was an option in earlier releases on Snow Leopard, but the checkbox to disable it was removed later.
Support for Macintosh clones was first exhibited in System 7.5.1, which was the first version to include the "Mac OS" logo (a variation on the original Happy Mac startup icon), and Mac OS 7.6 was the first to be named "Mac OS" instead of "System". These changes were made to disassociate the operating system from Apple's own Macintosh models.