It’s also a good idea to make screenshots of settings, to make it easier to set them back up later on. Otherwise, any cloud-based note-taking tool that encrypts notes will do. If you use a password manager that syncs with other devices, you could use that to store all the data you need. However, it’s a good idea to make sure you have a note of all the passwords, settings, licence keys and other data you’re likely to need. If you have a backup of your Mac from before you upgraded to Mojave, you should be able to migrate much of that data back to your Mac once you’ve reinstalled High Sierra. The process of downgrading wipes everything from your hard drive, including passwords, license keys and settings. Don’t do anything else until you’ve copied those files. However, any files you’ve used or been working on since you installed Mojave won’t be up to date on that back up, so you need to copy those to an external disk or a cloud storage service like iCloud Drive or Dropbox. If you’re unsure how to back up your Mac, you can follow the steps in this article. You should back up your Mac before you start any major process, and hopefully you backed up before installing Mojave. And please note that the process of downgrading is quite complicated and time-consuming, so try to be patient. If you've decided that you still want to go back to High Sierra, follow the steps below. How to downgrade from macOS Mojave to macOS High Sierra You can get started with CleanMyMac very quickly by downloading it here (for free). Moreover, the app has a special Optimization and Maintenance tools designed to improve your Mac's speed. You might find that just by deleting these file, performance improves considerably.

You can then preview what it’s found and recommends you delete and decide for yourself what you want to get rid of, or you can just press a button and have it delete everything it’s found. CleanMyMac X scans for junk files, such as those created by iTunes, the Photos app, and the Mac’s own system software. If you’ve decided to downgrade because Mojave is running slowly, you could try improving its performance first, by getting rid of unwanted files. We recommend that you read the guide below carefully before you start. The bad news, though, is that it’s quite a long process with lots of different steps. If you’ve installed macOS Mojave to take it for a test drive and decided you don’t like it, or it doesn’t work with some of your apps, and you want to downgrade from Mojave to High Sierra, the good news is that it’s possible. Additionally, you can clean junk, including user cache, system logs, broken login items, and much more.įeatures described in this article refer to the MacPaw site version of CleanMyMac X.

Get CleanMyMac for free and run maintenance scripts to fix all possible issues.

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