If you cannot restore any of your backups, then one workaround is to install a fresh copy of macOS, and then use the Migration Assistant to transfer the files and data from your most recent Time Machine backup. It’s possible for Time Machine backups to become corrupt, or encounter other errors. Has your Time Machine backup failed? Try the Migration Assistant! This may take a while, depending on factors such as the size of your backup, your Mac’s specifications, and the speed of your Internet connection, if you’re restoring from a network drive.

Click ‘Continue’ to begin the restoration process.

Select the backup that you want to restore, which will typically be your most recent backup.

If your Time Machine backup is stored on a network drive, then make sure you’re connected to the network before proceeding. If the backup is stored on an external disk, then you’ll need to attach the disk to your Mac, if you haven’t already.

Select the drive containing the Time Machine backup that you want to restore.

Read the warning, and if you’re happy to proceed then click ‘Continue.’.Select ‘Restore From Time Machine Backup.’.Once you’re in Recovery or Internet Recovery, you’re ready to restore your Time Machine backup: From here, you’ll have access to all the usual Recovery Mode options, including restoring a Time Machine backup. Once your Mac boots, you should see a spinning globe, followed by the standard macOS Utilities window. To boot into Internet Recovery, shut down your Mac, and restart it while holding down the ‘Option+Command+R’ keyboard shortcut. If Recovery Mode is unreachable, then you can boot into Internet Recovery instead, which is a version of macOS’ Recovery Mode that’s available to all Mac users who have an active internet connection. However, under certain circumstances the standard ‘Command+R’ shortcut may not work, for example maybe your recovery partition is corrupt, or you’re experiencing total hard drive failure. When you see the Apple logo, release these buttons and your Mac should successfully boot into Recovery. This involves shutting down your Mac, and then restarting it while holding down the ‘Command+R’ buttons. Most of the time, you’ll restore a Time Machine backup by booting into Recovery Mode.

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