Can you trust Disk Utility to securely erase hard drives and SSDs? How to prepare your Mac’s internal storage before selling it, so you don’t give your bank details away with it. And much more.
diskutil
How does the volume structure differ between Fusion Drives in HFS+ and APFS formats? Does Disk Utility show an accurate picture?
Why might we want to repair permissions, and how does it differ now from what is used to be? As shown in a clear diagram.
I’ve got two volumes showing in the Finder. So how come diskutil list tells me I’ve got four disks with a total of 12 partitions?
Contains binary data on the last integrity check made using fsck on a disk image. Can be deleted to enable some images to be mounted.
You need to format a USB memory stick in standard ExFAT. Do you try Disk Utility in Sierra, or High Sierra, when both are likely to fail?
Troubled at times, we have used Disk Utility through thick and thin. Now it has changed to support APFS, with some weird behaviour.
Some detailed guidance to help you make a test volume in Apple’s new APFS format, in either case-insensitive or -sensitive variant.
El Capitan has made the checking and repair of storage more complex. Here is a clear explanation of what to do.
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.
The Eclectic Light Company 