Suddenly, Time Machine won't backup
Hi all!
This is really strange. I just bought a new (used) iMac. I restored my
hard drive content on the new computer, with a Time Machine backup, and
it all went fine. High Sierra OS.
Now that I'm on my new iMac, and Time Machine won't make backups. I'm
mentioning that it doesn't seem to be a hard drive problem, because I
have two Time Machine backup hard drives, and it doesn't work with
neither of them.
As a hard drive problem was my only lead, I tried everything I found on
the Web (repair and others). Nothing worked. The last solution: format
the drive. It still doesn't work.
I'm clueless here. Any ideas?
Thanks a lot!
iMac 27″ 5K, macOS 10.13