The backup disk is not in Mac OS Extended (Journaled) format, which is required.
Hey guy's. Just yesterday my computer did a back up to my "My Book for Mac" external hard drive. I guess it tried to do it again at 5.54pm yesterday and now it is failing because of this "The backup disk is not in Mac OS Extended (Journaled) format, which is required."
Thing is, it just backed it up a few hours before. Why is it all of a sudden not working? How do I fix this? I did read another post on this same subject and some said to reformat the hard drive. Well, I really don't want to do that because I have almost a terabyte of stuff already saved on it. Again, I just don't know why all of a sudden this has become a problem? Any suggestions on how to make it work again with out having to reformat the drive?
Thanks
Kim
iMac 21.5", macOS 10.15