Time Machine couldn’t complete the backup ... "Do not back up" list.
I'm unable to backup to my external drives. My HD is on the "Do not back up" list and I cannot select it to remove it from the list. Help!
iPod classic
In the Finder, please press the key combination shift-command-C, or select
Go ▹ Computer
from the menu bar. A window will open showing all mounted volumes. Select the one in question and open the Info window. What is shown as the Format in the General section? If it's not "Mac OS", Time Machine can't back it up.