

There might be old copies of Lion, Mountain Lion, and even Snow Leopard for sale on sites like eBay. Non-developers can buy OS X Mountain Lion ($19.99) and OS X Lion ($19.99) from Apple directly. Apple will email you an unlock code, which you can redeem in the Mac App Store. If you have a valid Apple Developer account, you might be able to download older versions from /downloads. This will put an installation app in your Applications folder, which you should leave there. Once any of these downloads are complete, mount the. Leave the installation app in your Applications folder.ĭirect Disk Image Links for Older macOS Downloads Once any of these downloads finishes, do not open the installer to begin the installation. The official website does not provide any information about the changes in this version.Mac App Store Links for Older macOS Downloads The option to create charts showing temperature and voltages during the test.Monitoring is supported through the application of 3rd party such as Speedfan, MBM5 and Everest Ultimate Edition 3.5 and above.If the installer asks to unlock your disk, enter the password that you use to log in to your Mac. Click Continue, then follow the onscreen instructions. Reinstalling macOS doesn't remove your personal data. Detection is enabled for the CPU and Motherboard. When you see a window with the option to reinstall macOS, your Mac has started up from Recovery.All the tests can be customized by a number of criteria such as priority, duration, RAM, CPU, etc.


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