MacOS Sierra

macOS Sierra (version 10.12) is the thirteenth major release of macOS (formerly known as OS X and Mac OS X), Apple Inc.'s desktop and server operating system for Macintosh computers. The name "macOS" stems from the intention to unify the operating system's name with that of iOS, iPadOS, watchOS and tvOS. Sierra is named after the Sierra Nevada mountain range in California and Nevada. Its major new features concern Continuity, iCloud, and windowing, as well as support for Apple Pay and Siri. The first beta of macOS Sierra was released to developers shortly following the 2016 WWDC keynote on June 13, 2016. The first public-beta release followed on July 7, 2016. It was released to end users on September 20, 2016, as a free upgrade through the Mac App Store and it was succeeded by macOS High Sierra on September 25, 2017. macOS Sierra requires at least 2 GB of RAM and 8 GB of storage space and is designed to run on the following products: iMac (Late 2009 or later) MacBook (Late 2009 or later) MacBook Air (Late 2010 or later) MacBook Pro (Mid 2010 or later) Mac Mini (Mid 2010 or later) Mac Pro (Mid 2010 or later) Sierra dropped support for various Macs released from mid 2007 to mid 2009, the first version of macOS since OS X Mountain Lion, released in 2012, to do so. Support for Xserve was also dropped in Sierra. Developers have created workarounds to install macOS Sierra on some Mac computers that are no longer officially supported as long as they are packed with a CPU that supports SSE4.1. This requires using a patch to modify the install image. The default desktop picture is an image of Lone Pine Peak. The user can access the Siri intelligent assistant via the Dock, the menu bar or a keyboard shortcut and results are shown in a window in the upper-right corner. Siri can send messages, search the web, find files and adjust settings. Results can be dropped into other applications or pinned to Notification Center. For instance, pictures from search results can be dragged into a document.