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10.5: Reconnect Time Machine backup after drive swap
Authored by: only_solutions on Jan 01, '10 03:54:31PM

As far as I can tell, you can just switch off Time Machine and delete that unwanted full backup and the "Latest" alias which was pointing to it.

You can also just stop a backup in mid flight by switching Time Machine off while it is working.

Each backup snapshot is first done as a package pseudo-file as long as it is not complete. Only when it is finished successfully, it will be turned into a regular folder and renamed from <timestamp>.inProgress to just <timestamp>.

If you have interrupted a backup, this temporary package will be left behind. You can just delete it as well.

After that you can then apply this hint to re-adopt the previous backups to your new machine

From my experience Time Machine should then recognize your previous backup and only make incremental snapshots again.

Of course as I have explained above, this is kind of critical, so please make sure you have additional backups of your important data at hand on separate media.

Good luck! :-)

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10.5: Reconnect Time Machine backup after drive swap
Authored by: joelq on Jan 03, '10 03:34:09PM

Thanks! I decided to just let the backup finish. I figure, TM will eventually expire that backup and it should free up ~400GB some day.



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10.5: Reconnect Time Machine backup after drive swap
Authored by: only_solutions on Jan 03, '10 03:42:38PM

Yes, it will.

The main reason why I wanted to adopt my previous backups was that I wanted to keep as much as possible of the time line accessible for as long as possible.

The big chunk of another full backup will lead to a much earlier retirement of the oldest backups.

But if that is not seen as a big problem, it should be no problem to just let it run through.

The operations described above are indeed kind of challenging, so staying on the safe route is not a bad choice in itself.

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