Here’s where things get a little tricky: If you know you have a Time Machine copy and it is stored on an external hard drive, you need to plug in that external drive before choosing this option.
HOW TO DOWNGRADE MAC OS FROM SIERRA MAC
Start by selecting this option, then choosing Continue, and your Mac will search for any Time Machine copies of your OS. The first option should be to Restore from Time Machine Backup. Step 3: Look for a Time Machine backupĮxamine MacOS Utilities. Note: If you have a Mac with an Apple silicon chip, pressing and holding the power button should take you to a startup menu, where you should choose Options instead. You will know this worked if you see the window called MacOS Utilities appear. Now release those keys, and your Mac should enter Recovery mode. When your Mac is powering up, immediately press and hold the Command and R keys, until you see the Apple logo appear. Then press the power button to turn it back on. When your Mac is off, disconnect any accessories except for your mouse and keyboard. If a bug pops up and freezes your Mac during this process, hold down the power button for several seconds to force a shutdown. Your Mac may take a while to fully shut off. You can either press the physical power button or select the upper-left Apple icon and choose Shut Down to begin.
HOW TO DOWNGRADE MAC OS FROM SIERRA FULL
Step 2: Shut down and enter Recovery modeĬlose all your apps, and complete a full shutdown for your Mac. Oh, and if you’re on a MacBook, this is also a good time to plug your Mac into a power source and set up where you can stay for a while.
If you have lots of iCloud space, you can also store all important files in iCloud for easy retrieval if necessary.
You can always use Time Machine to back up data on a Mac, but buggy operating systems can make Time Machine difficult to use, so it’s smart to find a backup method that doesn’t rely on MacOS.Īn external hard drive comes in very useful here. If you haven’t already done so, now is the time to back up your data. If that describes you, there is a way to roll back Big Sur and return to the more pleasant Catalina OS, although it does take the right procedure.
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