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.
troubleshooting
For Big Sur and later, specifically tailored to provide full analysis and troubleshooting of hourly Time Machine backups to APFS in Sonoma.
A few years ago, there were 3 tools for diagnosing network problems: Network Utility (gone in Big Sur), Wireless Diagnostics, and Network Diagnostics (also gone). And what can networkQuality tell you about Private Relay?
Automatic Time Machine backups aren’t scheduled to run at precise times, but when it’s convenient. This explains how, and what to do if goes wrong.
We used to reset the Desktop, the SMC, and NVRAM, install the Combo updater, or perform a clean install. Now there’s only Safe mode left.
Many of us keep an emergency external drive at the ready by our Mac, in case we need to use it to recover from problems. What’s the equivalent for Apple silicon?
How to use First Aid in Disk Utility to check and repair APFS storage, whether it’s part of your boot disk, or general storage.
Although your Mac may be unable to boot into macOS, it might be able to start up in Recovery, or offer its internal SSD in Target Disk Mode.
Multiple requests for a keychain password, login password mismatch, broken keychains, expired certificates, and using the Data Protection keychain.
Repairing permissions has a long history in Mac OS X. The permissions concerned have changed over the years, and it’s no longer what it once was.
The Eclectic Light Company 