![]() ![]() Mac models compatible with macOS Sierra.Mac models compatible with macOS High Sierra.Mac models compatible with macOS Mojave. ![]() Mac models compatible with macOS Catalina.Mac models compatible with macOS Big Sur.As for Apple Silicon Mac with macOS Big Sur installed when leaving the factory, only macOS Big Sur and later versions are compatible due to the transition from Intel x86 architecture to ARM architecture. If you bought a Mac shipped with macOS Catalina, you can not reinstall macOS Mojave on it. The earliest version of macOS your Mac can run is the one that came with the Mac. In the first place, you need to check whether the earlier version of macOS you want to install supports running on your Mac. Restore MacBook to older OS via a bootable installer Revert Mac to original macOS in Recovery mode ![]() Install older macOS With a Time Machine backup Back up Mac and erase Mac before downgrading macOS Thus, you want to install an older version of macOS on your Mac. However, the latest macOS Monterey or the currently installed one may fail to satisfy you, such as the Mac runs slowly after update, it is not compatible with the software you prefer to use, etc. Select it and your PC will boot into macOS.It is recommended to keep your Mac updated to the latest version of macOS to maintain the security, stability, and compatibility, improve the performance of your Mac and experience the newly added features. This time, the Unibeast boot menu will display the macOS boot disk. When it’s done, restart your PC, with the USB drive still plugged in. After half an hour or so, it will finish. Select the drive and step through the installer until macOS starts installing itself. When the drive has erased, quit Disk Utility and the drive should be available to select from the installer.ġ2. Make sure Mac OS Extended (Journaled) is selected and the Scheme is set to GUID Partition Map, then click Erase. If that’s the case, click the Utilities menu and, when Disk Utility opens, choose the hard drive you want to install macOS on and click the Erase tab. When it comes to selecting the drive on to which you want to install macOS, there may be no options to choose from. Use your PC’s arrow keys to navigate to ‘External’ and press ‘Enter.’ The macOS installer should now start.ġ1. ![]() It should now boot into Unibeast and give you the option of which drive to install from. Plug in the USB stick on which you installed Unibeast and restart your PC. ![]()
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