In macOS 12.4, it’s impossible to run First Aid on any container or APFS volume on a disk with a Time Machine APFS backup volume, except in Recovery.
Disk Utility
Apple wants us to run our Macs at Full Security and not use third-party kernel extensions, but refuses to build S.M.A.R.T. access into USB in macOS.
It’s a simple and popular request: how is my Mac’s SSD ageing? How long is it likely to last? But macOS has no tool to offer, and 3rd party tools aren’t really ideal for M1 Macs still.
One likely cause of vanishing free space are large snapshots. So how can you tell why a snapshot is large, and how can you avoid it?
Snapshots are of great value, but can grow large if you don’t keep an eye on them. If you find Time Machine or another backup utility is storing large snapshots, here’s what to do.
We used to repair permissions of the system until SIP. After a short break, we often repaired them again, this time on preference files. Why did Apple cancel that? Should we still try it for fixing problems?
According to macOS Help, safe mode stops some software from loading, and performs a check of the startup disk. Here’s a more detailed and accurate account of what it does.
When you try ejecting a single volume of a bootable volume group on an external disk, other volumes are also ejected even though you chose to keep them mounted.
How to repair a snapshot with an error when it’s one of your backups on a hard disk? Currently this seems impossible, putting all those backups at risk.
Don’t waste time trying to discover which files are still open when you want to check or repair an APFS disk and Disk Utility throws an error. Here’s the solution.
The Eclectic Light Company 