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Mac OSX Last Possible Version

Hello, what’s the last version one can install on a Mac Pro 5.1 2009 model please…?



Mac Pro

Posted on Jun 29, 2022 1:11 PM

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Posted on Jun 29, 2022 1:16 PM

The last supported operating system is macOS El Capitan (10.11.6). See How to get old versions of macOS - Apple Support. Using Safari, you can download El Capitan from the Mac App Store by following the link on that site. Read carefully, the paragraph preceding that El Capitan link so you will know how to access the installer.


Take a Time Machine backup prior to any upgrade, and do not reuse that Time Machine drive for the new operating system backup.


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Question marked as Top-ranking reply

Jun 29, 2022 1:16 PM in response to pentlandcrown

The last supported operating system is macOS El Capitan (10.11.6). See How to get old versions of macOS - Apple Support. Using Safari, you can download El Capitan from the Mac App Store by following the link on that site. Read carefully, the paragraph preceding that El Capitan link so you will know how to access the installer.


Take a Time Machine backup prior to any upgrade, and do not reuse that Time Machine drive for the new operating system backup.


Mac OSX Last Possible Version

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