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?
diskutil
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.
Why El Capitan needs an SSD or Fusion Drive, and all about their care and maintenance.
Disk errors and crashes may be terminal, rescuable, or fully repairable. Understanding their nature enables you to choose how to tackle them.
Disk Utility may seem the most mundane of all the utilities, but together with its command shell partners packs a real punch in several important areas.
