The Finder reported free space had risen by over 80 GB, that’s more than 50%. It looked like something had wiped some of my media libraries.
APFS
Here’s an APFS (Encrypted) volume that isn’t encrypted, and an unencrypted volume with FileVault active. Something must be wrong.
Why should you trim an SSD? How to tell whether an SSD needs trimming, finding out whether it has trim support, and whether it does trim.
Should you run First Aid on every volume, then each container? And why can it return status 65? How can you work around that?
Details of what happens when an APFS (Encrypted) volume is mounted, when mounting a Time Machine snapshot, unmounting a volume, and loading a Cryptex.
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.
A step-by-step account of how Disk Arbitration and APFS mount an external disk, from handling its partitions, to performing trims.
Update adds a 22nd tool, to display a log extract tailored to examining the mounting of APFS disks. Also valuable for any APFS investigation.
When you updated your iPhone or iPad to iOS 10.3 six years ago, you were among the first to use Apple File System, although you didn’t know it at the time.
Enabling the TRIM command was once thought important to maintain good write performance on SSDs. What has happened to it? Should we still be enabling it?
The Eclectic Light Company 