Performed by CacheDelete, it first looks at a wide range of macOS caches, and only at the end purges snapshots, to free up space when it runs short.
APFS
Good space management doesn’t bring new emoji, but it makes a big difference when the Finder doesn’t give completely inaccurate figures for Available space. A practical demonstration of its gross errors.
Can we trust the figures the Finder provides for used and available space on a volume? What does it count as purgeable?
When the Finder works out how much space is available on disk, what does it count as being “purgeable”? The answer may surprise you.
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.
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.
The Eclectic Light Company 