Oct 31, 2019 · OS X Yosemite. OS X Mavericks. OS X Mountain Lion. OS X Lion. OS X Snow Leopard. If your Mac won't start up from a compatible version of macOS, it might require a specific build of that version. To get the correct build, reinstall macOS or upgrade to a later version of macOS.

Global Nav Open Menu Global Nav Close Menu; Apple; Shopping Bag +. Search Support Which versions of macOS does your Mac support? iMac & iMac Pro. Mountain Lion OS X 10.8.x. Mavericks OS X 10.9.x. Yosemite OS X 10.10.x. El Capitan OS X 10.11.x. Sierra macOS 10.12.x. High Sierra macOS 10.13.x. Mojave macOS 10.14.x. Launch of Mac OS X Mac OS X was originally presented as the tenth major version of Apple's operating system for Macintosh computers; current versions of macOS retain the major version number "10". Previous Macintosh operating systems (versions of the classic Mac OS) were named using Arabic numerals, as with Mac OS 8 and Mac OS 9.

How to get hold of old macOS & Mac OS X versions

macOS and OS X version code-names | iMore Aug 15, 2018 Macs By Maximum Supported Version of Mac OS X (OS X The maximum version of Mac OS X, OS X, or macOS supported by each G3 and later Mac follows. For complete specs on a particular system, click the name of the Mac. For all Macs that are compatible with a specifc maximum supported version of Mac OS X -- courtesy of EveryMac.com's Ultimate Mac Sort -- click the OS of interest.

For example, the first beta version of Mac OS X 10.10 Yosemite came with several known issues, including problems in Safari while trying to access Netflix content, iPhoto, Photo Stream and iCloud

How To Dual-Boot Mac: Run Two Versions Of macOS On A Mac On older versions of Mac OS X and macOS you would have needed to partition your Mac, while in more modern versions of the Mac operating system you create a volume. Old versions of Windows, Mac and Linux Software, Apps