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?
diskutil
Explains the identifiers, sizes and tidemark data shown for snapshots in Disk Utility, in Monterey.
New for Monterey: Disk Utility now offers complete features for the management and maintenance of snapshots.
The differences between HFS+ and APFS volumes explored. What a container is, and how to add new HFS+ and APFS volumes to a disk.
Why deleting either the System or Data volume, but not the whole Volume Group, could get your Mac into trouble in macOS 11 or 12.
Given their very different structure, backups on APFS disks shouldn’t require routine maintenance. Checking and repair is performed using Disk Utility.
Until Big Sur started backing up to snapshots on APFS, there was little interest in being able to copy snapshots. Now we realise that we can’t.
There’s no more critical app on your Mac, yet Disk Utility has suffered years of neglect – years in which APFS has grown many new features, and all Disk Utility gets is bugs and workaround.
Disk Utility in Big Sur can turn a 1 TB external disk into 4.5 TB or more of imaginary containers. Sadly it’s just a bug, and here’s how to work around it.
We don’t know when Apple decided to introduce Big Sur’s SSV, but even now it hasn’t told users it won’t be releasing standalone updates for 11.0.1 or 11.1.
The Eclectic Light Company 