New file system

cynics

macrumors G4
Jan 8, 2012
11,586
1,885
If you want to know why the APFS file system gets you storage back there are a few reasons. Better partitioning scheme and other low level optimization. Also APFS uses file system features like cloning, which basically means the same data isn't saved twice. If you made a hundred copies of the same file it doesn't actually have a hundred copies, just one with a hundred user visible files pointing at one file. This is kind of a double edge sword, while it preserves space it makes it harder to clear space manually when you need it.

Plus the update cleaned up some of the junk and cache.
 
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