
If you need to restore some of your documents and files to your Mac after you downgrade, the backup may be your only place to find them. You’ll also need the backup because the downgrade process includes erasing your Mac’s startup drive. This is to ensure that, should something go wrong during the downgrade process, you can recover your data and be back where you started.

The downgrade process begins with backing up your current system. No matter the reason, you can downgrade from macOS 10.14 and revert to an earlier version by following the steps below. Or maybe a favorite or mission-critical app hasn’t been updated yet for Mojave, and you need to downgrade the OS to be able to keep running an older app. Perhaps Mojave is performing poorly on your system, even after trying some of the tips in: Is Mojave Slowing Your Mac Down? This is How You Can Speed It Up.

Even with all the new capabilities, some of you may find yourselves wishing for one of the previous versions of the Mac operating system. MacOS Mojave has a lot going for it: plenty of new features, new security and privacy safeguards, even new apps, such as News and Home.
