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Time machine must create a new backup for you

Hi all


Been getting the above almost once a week and seemingly ever more frequent, a full new back up is made it'll make incremental backups over a period of days and then here we are again wanting to start a new back up.


I have 1.3tb of info that it backs up which takes a good few days.


Is my back up drive screwed or is the software doing something it shouldn't?


Thanks in advance.

iMac 27" 5K, macOS 10.14

Posted on Apr 14, 2019 2:56 AM

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Posted on Apr 14, 2019 8:29 AM

Please read If you need to create a new backup from Mac.


Considering the additional symptoms (increasing frequency of that message and the length of time to back up 1.3 TB) it is very likely the TM backup disk has been operating in a state of failure. The solution is to replace it.

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Time machine must create a new backup for you

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