Time machine backup is too large, that is not true, said

After the upgrade to OS Sierra, Time Machine always tells me that the backup is too big to fit on the external drive that I use. I erased the disc and checked all volumes, I don't want to back up. He always tells me that the backup is 2 TB.

My boot drive has 155 GB in use, I do not understand why TM attempts to use 2 TB. I've removed the preferences, he always tells me that it is too big. The external drive has 1 TB of free space.

Any suggestions?

If you open Applications > utilities > Terminal and paste the following command and press return, what is the result:

DF h

Tags: Mac OS & System Software

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