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Transferring from one hard drive to another to keep backups.

I backup with Time Machine using an external hard drive. I recently changed hard drives, using a 5 TB instead of the 4 TB I had been using. How do I transfer the backups from the old to the new?

iMac 21.5″ 4K, macOS 10.14

Posted on Jun 25, 2021 5:02 AM

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Posted on Jun 25, 2021 7:36 AM

Apple explains how in https://support.apple.com/en-us/HT202380

3 replies

Jun 25, 2021 5:08 AM in response to leib

Don't try to do this in the Finder - there are so many files it's likely never to finish. Your best method - I did this once- is to use Carbon Copy Cloner or SuperDuper to clone the old disk to the new one. However if you've already started making backups on the new disk I'm not sure this will work: it's best to do the cloning onto a newly formatted disk so that TM will think it's the same disk.

Transferring from one hard drive to another to keep backups.

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