What to do when there are problems with a backup, or you want to delete backups or their contents.
troubleshooting
Are you worried about strange and serious problems occurring when you upgrade to Catalina? Here are strategies to prevent and deal with them.
Looking at failure of automatic backups, cancelled backups, and errors occurring when backing up, using T2M2, from Sierra to Catalina.
Detailed log excerpts showing normal backups in 10.12 to 10.15, with some of the more common errors encountered.
New series looking at how TM works, what its problems are, what tools to use to diagnose those, and how to fix it.
What should you do when you try to restart in Diagnostics Mode and can’t? And how to check and restore a Recovery partition.
Don’t the update buttons work in LockRattler? It’s probably because something is blocking outgoing traffic.
It’s actually even easier to browse the unified log and discover what is going wrong with a reproducible problem. Here’s how.
What to do when your Mac won’t boot into the Desktop and Finder – another summary diagram for diagnosis and suggested solutions.
There’s something wrong with that file, which seems to keep crashing an app. When you can’t put your finger on what’s wrong, it’s likely to be a xattr problem.
The Eclectic Light Company 