This does the same thing as using Terminal commands but with a simple graphical interface. To that, you need to select it when your Mac starts up. If you want to install an older version of macOS on your main drive, you need to completely wipe it first.
Now, when you head back to the macOS installer, you should be able to install the older version of OS X on your main disk. If you need to run an older version of OS X to use older third-party software, consider looking for alternatives that run on the latest versions instead.
That way, downgrading might not be necessary at all. With over 5 years of supporting Mac users, Ruslana lives and breathes everything Mac. Tech expert, Apple lover, and well, a cutie. Say hi on LinkedIn! Oops, something went wrong. We use cookies to give you the best site experience.
Check out our Cookie Policy for more details. Mac Tutorials. By Ruslana Lishchuk. For example, to get an installer for Lion, you may ask a friend who has Lion-operated Mac or, once again, set up a virtual machine running Lion. Then you will need to prepare an external drive to download the installation file using OS X Utilities.
Below is the detailed instruction how to do it. Now the OS should start downloading automatically onto the external drive. After the download is complete, your Mac will prompt you to do a restart, but at this point, you should completely shut it down. Locate InstallESD.
The same steps are valid for Mountain Lion and Mavericks. If your Mac runs macOS Sierra Instruction to downgrade from macOS Sierra. Instruction to downgrade from macOS High Sierra. Instruction to downgrade from macOS Mojave. Instruction to downgrade from macOS Catalina. Before you do it, the best advice is to back your Mac up so your most important files stay intact.
In addition to that, it makes sense to clean up your Mac from old system junk files and application leftovers. The easiest way to do it is to run CleanMyMac X on your machine download it for free here.
They should have image installations going back to OS Leopard and earlier. You can also ask their assistance to create a bootable USB drive with the installation file. So here you are. We hope this article has helped you to download an old version of Mac OS X. Leave the installation app in your Applications folder.
Once any of these downloads are complete, mount the. DMG file and run the. PKG installer within. This will put an installation app in your Applications folder, which you should leave there.
If you have a valid Apple Developer account, you might be able to download older versions from developer. Apple will email you an unlock code, which you can redeem in the Mac App Store.
Some websites might offer old versions of OS X for download, but we recommend avoiding them. First, the installer might contain malware. Second, there are legal concerns: OS X is still copyrighted software.
Even if you own a license, you might not be able to legally download it in your jurisdiction. If you can, you might not be able to legally use BitTorrent to download it, as your BitTorrent client will be uploading parts of OS X to other people during the download process.
You can change various parts of this command to suit your own circumstances, with the main one being the name of the installer.
Be aware that any spaces will need to be preceded by a backslash. You can run the ls command to list all connected volumes, which will include your USB installation medium in case you need to check the label. First, insert your USB drive and turn off your Mac. They are as follows:. Once macOS loads You might need to select a language first.
Follow the rest of the prompts to finish the installation. This is one of the few things that you can try to improve performance on an old Mac. It installs an app named Install [ Version Name ]. Open that app from your Applications folder to begin installing the operating system.
Check compatibility The version of macOS that came with your Mac is the earliest version it can use. Published Date: December 14,
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