I recently bought a new MacBook. It's running Yosemite and I managed to transfer my old user profile from the old computer via migration assistant.
Now I want to seamlessly continue my backup on the external USB HDD. But TM does not recognize that there's already a backup on the drive.
I was running osx 10.9 on the old computer. On the old computer, I was using a system partition and a data partition, on the new one I have only one partition. What can I do to continue my old backup?