There should be an update available, but you can’t find it, or it fails to install, or you have problems with a Content Caching Server. How to tackle these.
troubleshooting
A strategy for diagnosing problems using the log. How to limit the number of entries shown using appropriate periods and predicates, and more.
Reading the log in macOS isn’t easy, but here ten systems where it’s the only way to discover and address problems, and a bonus 11th.
There’s a problem with your Mac, so you try starting it up in Recovery. But that doesn’t work. What should try next? Intel and Apple silicon Macs are then quite different.
What do you do when your Mac refuses to log you in because it thinks your password is incorrect? Don’t rush or panic, but follow these steps.
Safeguard your Mac, take screenshots, capture the logs in a logarchive or with sysdiagnose, make a written record, then repair and recovery.
Analysis of T2M2’s report from rotating Time Machine backups, including the first full backup made to a NAS.
How to read T2M2’s report on your Time Machine backups, interpret the results, and discover where any problems are occurring.
Minor update to version 2 for recent macOS backing up using Time Machine to APFS. This lets you reduce the number of error messages shown.
For Big Sur and later, specifically tailored to provide full analysis and troubleshooting of hourly Time Machine backups to APFS in Sonoma.
The Eclectic Light Company 