If you want to run older versions of OS X on your Mac, you need to get an older Mac that can run them. Simply speaking, Macs cannot boot into an OS X version older than the one they shipped with when new, even if it’s installed in a virtual machine. You may find you can’t install an old version of Mac OS X on a new Mac because the drivers for the hardware in your new Mac simply don’t exist in the old software, so it can’t run. Now for the bad news: It is unlikely that your Mac will be able to run a version of macOS or Mac OS X that is older than the one that was installed on it when you bought it. The Mac must also be using macOS High Sierra or later, the latest version of macOS Sierra or the latest version of OS X El Capitan.First you need to confirm that your Mac will be able to run the version of macOS or Mac OS X you want to install.Īs a guide, expect your Mac to be able to run any version of macOS or Mac OS X that was supported when that Mac launched, and any that were released in the few years immediately following your purchase. To download an installer suitable for creating a bootable installer, use the App Store or use a web browser to download from a compatible Mac. Follow the onscreen installation instructions.Ī bootable installer can be useful if you want to install macOS on multiple computers without downloading the installer each time, or when you can’t install using the other methods. Open your Applications folder and double-click the macOS installer, named Install. pkg file, then follow the onscreen instructions to install the macOS installer into your Applications folder. dmg file to open it and see the package (.pkg) file within.ĭouble-click the. Use these links to download a macOS disk image (.dmg) file.ĭouble-click the.
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