How to upgrade my Mid 2011 iMac to latest OSX | MacRumors
Macintosh operating systems - Wikipedia Oct 04, 2001 macOS version history - Wikipedia Dec 29, 2002
29/11/2017 · Given your Mac isn’t new and is filled with data, you will probably need enough free space on your Mac. This includes not just space for the OS itself but also space for other applications and your user data. One more argument is that the free space on your disk translates into virtual memory so your apps have “fuel” to operate on. The chart below tells you how much free space is needed.
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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. Systems with "Current" support the latest version of the macOS, macOS Big Sur (macOS 10.16/macOS 11), currently under development and scheduled for final release this autumn. 31/03/2020 · Apple also releases system updates that keep your Mac secure and stable. When a new major version of OS X is released, you can download the upgrade for free from the App Store. If you're using an older version of OS X, updates are handled through the Software Update utility. 22/06/2020 · Apple has revealed MacOS Big Sur, its new operating system for computers. It comes with a complete redesign that changes the look of the computers icons and windows. Apple says that the new design