The system's windowing system, Quartz Compositor, supports Metal 2. It includes virtual-reality and machine-learning features, as well as support for external GPUs. Metal, Apple's low-level graphics API, has been updated to Metal 2.

It also has built‑in encryption, crash‑safe protections, and simplified data backup on the go. It supports 64‑bit inode numbers, is designed for flash memory, and is designed to speed up common tasks like duplicating a file and finding the size of a folder's contents. Changes System Apple File System Īpple File System (APFS) replaces HFS Plus as the default file system in macOS for the first time with High Sierra. This requires using a patch to modify the install image. It is possible to install High Sierra on many older Macintosh computers that are not officially supported by Apple. MacOS High Sierra requires at least 2 GB of RAM and 20.12 GB of available disk space. Macs that were released after High Sierra was released, with High Sierra as the initial operating major release, are: When macOS High Sierra was released, it supported all Macs that can run macOS Sierra: Among the apps with notable changes are Photos and Safari. This makes it similar to previous macOS releases Snow Leopard, Mountain Lion and El Capitan. Its name signified its goal to be a refinement of the previous macOS version, macOS Sierra, focused on performance improvements and technical updates rather than features.

The name 'High Sierra' refers to the High Sierra region in California. macOS High Sierra was announced at the WWDC 2017 on J and was released on September 25, 2017. MacOS High Sierra (version 10.13) is the fourteenth major release of macOS, Apple Inc.'s desktop operating system for Macintosh computers.

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