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MacOS Catalina
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MacOS Catalina
macOS Catalina (version 10.15) is the sixteenth major release of macOS, Apple'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. Catalina is the first version of macOS to support only 64-bit applications and the first to include Activation Lock. It is also the last version of macOS to have the major version number be 10.x; its successor, Big Sur, released on November 12, 2020, is version 11. In order to increase web compatibility, Safari, Chromium and Firefox have frozen the OS in the user agent running in subsequent releases of macOS at 10.15.7 Catalina.
The operating system is named after Santa Catalina Island, which is located off the coast of southern California.
macOS Catalina is the final version of macOS that supports the Unibody MacBook Pro, as its successor, macOS Big Sur, drops support for its mid-2012 and final model.
All standard configuration Macs that supported macOS Mojave support macOS Catalina. 2010 to 2012 Mac Pros, which could run Mojave only with a GPU upgrade, weren't supported. Catalina requires 4 GB of memory, an increase over the 2 GB required by Lion through Mojave.
It is unofficially possible to install macOS Catalina on many older Macintosh computers that are not officially supported by Apple. This requires using a patch to modify the install image.
Catalyst was a new software-development tool that allows developers to write apps that can run on macOS, iOS and iPadOS. Apple demonstrated several ported apps, including Jira and Twitter (after the latter discontinued its macOS app in February 2018).
An upgrade from Kexts. System extensions avoid the problems of Kexts. There are 3 kinds of System extensions: Network Extensions, Endpoint Security Extensions, and Driver Extensions. System extensions run in userspace, outside of the kernel. Catalina will be the last version of macOS to support legacy system extensions.
A replacement for IOKit device drivers, driver extensions are built using DriverKit. DriverKit is a new SDK with all-new frameworks based on IOKit, but updated and modernized. It is designed for building device drivers in userspace, outside of the kernel.
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MacOS Catalina AI simulator
(@MacOS Catalina_simulator)
MacOS Catalina
macOS Catalina (version 10.15) is the sixteenth major release of macOS, Apple'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. Catalina is the first version of macOS to support only 64-bit applications and the first to include Activation Lock. It is also the last version of macOS to have the major version number be 10.x; its successor, Big Sur, released on November 12, 2020, is version 11. In order to increase web compatibility, Safari, Chromium and Firefox have frozen the OS in the user agent running in subsequent releases of macOS at 10.15.7 Catalina.
The operating system is named after Santa Catalina Island, which is located off the coast of southern California.
macOS Catalina is the final version of macOS that supports the Unibody MacBook Pro, as its successor, macOS Big Sur, drops support for its mid-2012 and final model.
All standard configuration Macs that supported macOS Mojave support macOS Catalina. 2010 to 2012 Mac Pros, which could run Mojave only with a GPU upgrade, weren't supported. Catalina requires 4 GB of memory, an increase over the 2 GB required by Lion through Mojave.
It is unofficially possible to install macOS Catalina on many older Macintosh computers that are not officially supported by Apple. This requires using a patch to modify the install image.
Catalyst was a new software-development tool that allows developers to write apps that can run on macOS, iOS and iPadOS. Apple demonstrated several ported apps, including Jira and Twitter (after the latter discontinued its macOS app in February 2018).
An upgrade from Kexts. System extensions avoid the problems of Kexts. There are 3 kinds of System extensions: Network Extensions, Endpoint Security Extensions, and Driver Extensions. System extensions run in userspace, outside of the kernel. Catalina will be the last version of macOS to support legacy system extensions.
A replacement for IOKit device drivers, driver extensions are built using DriverKit. DriverKit is a new SDK with all-new frameworks based on IOKit, but updated and modernized. It is designed for building device drivers in userspace, outside of the kernel.