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You can either choose Time Machine or you can choose a third-party Mac backup software for this purpose.
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There are several ways to back up Mac data. If you face any issues, let us know in the comments below.Backup Mac Data with Time Machine Before Downgrading macOS/Mac OS Xīefore you start to downgrade macOS to an older version, it is highly recommended that you back up all your important data first.
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This is how you can downgrade from macOS High Sierra to macOS Sierra without losing your important files and data. Once the restore is done, your Mac will restart and you should be back on macOS Sierra with all your saved files and data. So stay patient and let the process complete. The process can take a while depending on the size of the backup. Now your Mac will restore from the selected Time Machine backup. Step 6: A list of all the available Time Machine backups will be displayed. Step 5: Select the source where your Time Machine backup is stored, such as the connected hard drive, and then click on Continue. Choose Restore from Time Machine Backup and click Continue. Step 4: The OS X Utilities screen is displayed. Step 3: While your Mac is restarting, hold down the Cmd+R keys. Step 2: Restart your Mac by clicking on the Apple logo in the menu bar and choosing Restart. Step 1: Connect the hard drive where your Time Machine backup is stored. Once you’ve re-installed macOS High Sierra, you can get back all your files and data by restoring from the most recent Time Machine backup. Once the process is completed, it will restart and you should be downgraded back to macOS High Sierra. Your Mac will begin reinstalling macOS Sierra. Step 3: Accept the terms & conditions, and follow the on-screen instructions. Step 1: From the OS X Utilities window, click on Reinstall OS X. Now read the next section for re-installing macOS Sierra. Once you’ve erased macOS High Sierra, exit Disk Utility and go back to the OS X Utilities screen. Step 6: From the Format dropdown list, choose Mac OS Extended (Journaled), and then click on Erase. Enter a name for the file to be removed, such as ‘macOS High Sierra’. It may be called ‘macOS High Sierra Beta’.
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Step 4: Select your Startup Disk from the sidebar. Step 3: Click on Disk Utility, and then press Continue. Step 2: While your Mac is restarting, press and hold the Cmd+R keys. To do so, click on the Apple icon in the menu bar and choose Restart. Step 1: The first step is to restart your Mac. Stay patient and do not cause interruptions during the process. Downgrading and restoring from a backup will take some time depending on the amount of data to be restored.You should plug it to the charger until the downgrade is completed. Ensure that your Mac has enough battery to complete the downgrade process.
#DOWNGRADE MAC OS WITHOUT LOSING DATA MANUAL#
Therefore, make sure that you take a complete backup of your Mac using Time Machine (System Preferences > Time Machine), or you could go with the manual approach of saving your important files to an external drive.