• • • macOS High Sierra (version 10.13) is the fourteenth of, 's desktop operating system for computers. It is the successor to and it was announced at the 2017 on June 5, 2017 before being released on September 25, 2017; its successor was released on September 24, 2018. The name 'High Sierra' refers to the. As with, and, the name also alludes to its status as a refinement of its predecessor, focused on performance improvements and technical updates rather than user features.

Among the apps with notable changes are. Contents • • • • • • • • • • • • • • • • • • • System requirements [ ] macOS High Sierra will run on the following Macintosh computers: •: late 2009 or later •: late 2009 or later •: mid-2010 or later •: late 2010 or later •: mid-2010 or later •: mid-2010 or later macOS High Sierra requires at least 2 GB of RAM and 14.3 GB of available disk space. A workaround exists to install macOS High Sierra on some Mac computers that are no longer officially supported as long as they are equipped with a CPU that supports SSE4.1. Hardware acceleration requires a Mac with a Intel processor or newer: •: late-2015 27' or newer, mid-2017 21.5' or newer •: early-2016 or newer •: mid-2016 or newer • External support requires a -enabled Mac: •: late-2016 or later •: mid-2017 or later • Changes [ ] System [ ] Apple File System [ ] (APFS) replaces as the default in macOS for the first time with High Sierra. It supports 64‑bit, is designed for, and is designed to speed up common tasks like duplicating a file and finding the size of a folder’s contents. It also has built‑in encryption, crash‑safe protections, and simplified data backup on the go. Metal 2 [ ], Apple's low-level graphics API, has been updated to Metal 2.

Toshiba studio 3555c. I'm curious what MacBook Pro you are using specifically. While High Sierra has not made my Mac slow, it has made it unbearably HOT and the fans run all the time.

It includes and features, as well as support for. The system's windowing system,, supports Metal 2. Media [ ] macOS High Sierra adds support for (HEVC), with where available, as well as support for (HEIF). Macs with the Intel processor offer hardware support for Main 10 profile 10-bit hardware decoding, those with the Intel processor support Main profile 8-bit hardware decoding, and those with graphics also support full HEVC decoding. However, whenever an Intel IGP is present (such as macbooks), the frameworks will only direct requests to Intel IGP. In addition, audio codecs and are also supported, but not in iTunes.

Other [ ] ('kexts') will require explicit approval by the user before being able to run. The Low Battery notification and its icon were replaced by a flatter modern look. [ ] The time service was replaced with for the time synchronisation. The and command line programs were removed. The screen can now be locked using the shortcut CMD+Ctrl+Q. The ability to lock screen using a menu bar shortcut activated in Keychain Access preferences has now been removed.

The 10.13.4 update added support for external for Macs equipped with 3 ports. The update discontinued support for external in 2015 or older Macs, equipped with 1 and 2 ports. Starting with 10.13.4, when a 32-bit app is opened, users get a one-time warning about its future incompatibility with the macOS operating system. Applications [ ] Photos [ ] macOS High Sierra gives Photos an updated sidebar and new editing tools. Photos synchronizes tagged People with. Mail [ ] Mail has improved search with Top Hits.

Mail also uses 35% less storage space due to optimizations, and Mail's compose window can now be used in split-screen mode. Safari [ ] Safari has a new 'Intelligent Tracking Prevention' feature that uses to block third parties from tracking the user's actions. Safari can also block autoplaying videos from playing.

The 'Reader Mode' can be set to always-on. Safari 11 also supports. Notes [ ] The Notes app allows the user to add tables to a note. A note can be pinned to the top of the list. Siri [ ] now uses a more natural and expressive voice. It also uses machine learning to understand the user better.