Once you’ve backed up the files you’ve worked on since installing Mojave, and created the bootable installer, it’s time to erase Mojave:
Downgrade mac os sierra how to#
How to downgrade from macOS Mojave if your Mac shipped with High SierraĮrase your startup disk as described below in Step 4 - you need to do that first because Recovery mode won’t install an older version of the OS over a newer version.įrom macOS Utilities, choose Reinstall macOS. Select the date and time of the backup you want to restore to.
Downgrade mac os sierra password#
Type in your name and password for the disk, if necessary. If it’s on a Time Capsule or network disk, select it and choose Connect to Remote Disk. If your backup is on an external disk, select it. In the macOS Utilities window, choose Restore from Time Machine Backup. Make sure your Time Machine disk is connected to your Mac, either directly or over a network, before you start.Įrase your startup disk, as described below in Step 4. You can use that to reinstall High Sierra. Since most users back up their macOS before updating, in most cases restoration from Time Machine is simple. How to downgrade from a Time Machine backup 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, Google 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. To revert your Mac back to High Sierra, follow the steps below.
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