Apple says that if you run First Aid on a disk, each of its volumes is checked too. Is that really true?
disk damage
Third party tools for checking and repairing APFS are still very limited. Is it better to use fsck to check and repair APFS?
Snapshots are one of the crown jewels of APFS, and very powerful. Why then has Apple made them almost impossible to use?
Very few apps are able to make APFS snapshots – Time Machine, Carbon Copy Cloner, and SuperDuper! Why aren’t they more accessible?
A good way of restoring a volume which has been damaged is from a previous snapshot. How easy is it in practice, though?
Your disk’s journal aims to prevent disk errors which can occur after a crash. Here’s how to use it to protect your Mac’s data.
Do third-party disk tools work with Fusion Drives, or are you stuck with just Disk Utility?
If you are running Yosemite or El Capitan, OS X may have changed the way that your boot disk is managed – and how you can maintain and repair it.
How I recovered my broken RAID backups, and got everything working again.
I bought a triple DVD set of a Puccini opera. When inserted into my Mac mini, each disk freezes when I try to play it, and I cannot even eject the DVD until I have forced DVD Player to quit. Could all three disks be defective?
The Eclectic Light Company 