What disk checks are made in Safe mode? How are they different from those run during normal startup? If Disk Utility is to be our only APFS repair tool, shouldn’t have more and better features?
fsck
Claimed to block 3rd-party extensions and customisations from loading, check the startup disk, and to clear some system caches. When and why should you use it?
This reference covers fsck_apfs, diskutil information, diskutil apfs, conversion of HFS+ to APFS, mount_apfs, and newfs_apfs.
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.
Disk errors threaten your data: how to detect them, how to use First Aid in Disk Utility, how to use fsck, and what to do with the disk afterward.
Have you ever tried running First Aid on an APFS volume and been told it failed with status 65? It’s time for that to be fixed, so we can check and repair disks properly.
Invaluable tool for identifying and locating some problems, for troublesome updates, clearing caches and more.
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.
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.
When your backups are stored on hard disks, even though they may use APFS, it’s important to check they’re sound. How to do better than Disk Utility.
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