Time machine backups
I have recently bought a brand new 2TB portable hard drive to backup my computer and it wont back up because of insufficient space.
My macbook pro is only 121GB
MacBook, macOS 10.12
Question marked as
It is your internal drive, not the new external, that is the problem. That advisory indicates TM needs to write a file to your internal drive ("source drive") before making the backup, and there is not enough room on the internal drive to allow that.
You'll need to offload several GB of files to a thumb drive or other non-Time Machine device before continuing.
