Mac storage, explained.
Where your disk space actually goes, what is safe to delete, and how to free it by hand or with CleanMacster. Every command here was run on a real Mac before it went into a guide.
What is purgeable space on a Mac, and how do you free it?
Finder calls it available, Terminal doesn't, and installers sometimes refuse to start because of it. What is in it and how to release it now.
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Why is System Data so big on a Mac, and how do you shrink it?
The grey bar in Storage settings, taken apart: snapshots, caches, logs, virtual machines and app leftovers, and how to clear each one safely.
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How to clear Developer storage on a Mac: Xcode, simulators, Docker and package caches
DerivedData, simulator runtimes, device support files, Docker images, npm and Homebrew caches: where each lives and what deleting it costs you.
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