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Time Machine Backup

I recently upgraded from Majove to Big Sur. Now Time Machine has a backup of both systems on it. Could I delete Majove? Every backup is lasting forever now, even when I just made some minor changes since the last backup.

Posted on Jun 2, 2021 12:09 PM

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Posted on Jun 2, 2021 12:44 PM

If you are sure you no longer want or need Mojave I would erase TM drive and start over fresh. The first backup will take a while but then after it will only do incremental backups as needed. The backups should only take a short time.

4 replies

Jun 2, 2021 4:28 PM in response to margalina

With the drive connected if it shows as TM then go to preferences, TM, select disk and then click on the disk and then click remove.

Then open preferences, disk utility and select that disk and click on erase. Name it Time machine, Format to APFS. This will now make a clean drive. Go back to Preferences, TM and select disk and pick that disk you just formatted. That should work.

Time Machine Backup

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