![]() We would like to mention that every time we say “backup” we mean back up to your computer’s internal hard drive or an external one too. The first thing we need to do is back up all our files just in case something goes wrong during the whole downgrade process.The process might take an hour or two depending on how many applications, files, and folders you have on your computer You cannot downgrade from macOS Catalina to High Sierra using Time Machine because Apple does not allow you to do so, only iTunes can be used and it requires a USB flash drive or external hard drive that must be at least 16GB in size. Please note that after downgrading to macOS High Sierra, you’ll need to re-install all of your App Store purchases one at a time! Don’t worry it’s easy and only takes a few seconds per app! You may also notice some sound effects still carry over from Catalina as well as other small bugs such as flakey WiFi passwords but those can usually be fixed by resetting your SMC.Upon reboot, you will be greeted with this beautiful screen (do not click anywhere).Wait for the installation to finish, once done, restart your computer to begin using High Sierra again! If you have any questions or concerns about downgrading from macOS Catalina back to high sierra, please contact our Apple technicians who will be able to assist you with your downgrade.Enter an admin password when prompted to start installing High Sierra – do not use your Catalina password!. ![]() ![]() Choose your disk where you would like to install macOS High Sierra if it’s different than your current operating system drive (note that down somewhere) then click Install.Launch the installer, accept the EULA terms and click Continue.Get a copy of the 10.14 or 10.13 installer from this link.How do I downgrade from macOS Catalina to High Sierra? As with any computer procedure, there is always the risk of losing data if something goes wrong so it is best to be safe than sorry by making sure you have all your files backed up somewhere safe before continuing with this article. ![]() You will need a backup of your data before beginning this process.
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