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10.5: Repair Time Machine after logic board changes
In my experience, however, following a logic board/MAC address change Time Machine will refuse to recognise the previous backups as belonging to the current system. After re-selecting the backup drive, it will just start a new backup set.
10.5: Repair Time Machine after logic board changes
Not so. It will recognise the earlier snapshots. Why would it not if the only association between the computer and TM is the MAC address. It simply does not make sense for it to be otherwise.
10.5: Repair Time Machine after logic board changes
Yes, I've had the same problem quite a few times. Went through 3 replacement machines of identical configuration, each time Time Machine would initially report 'Backup Failed', saying it couldn't find the backup volume.
10.5: Repair Time Machine after logic board changes
Yep - I ran a few tests on this scenario and you're correct. I was not able to figure out just how to fake TM into continuing on from where it was. It does always make a new FULL backup. :( Bummer.
10.5: Repair Time Machine after logic board changes
TM will make a full backup if it cannot trust the backup volume's TM management data. I suspect if you used the HINT as posted here that what you did was insufficient to convince TM that things were as they should be. Hence TM will protect user by doing a full backup as a safety precaution. |
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