SB-01
August 5, 2026
August 5, 2026
How to check free space on your Mac
Four ways to see how much room is left on a Mac drive, from About This Mac to df, and why two of them can disagree.
- Difficulty: Beginner
- Time: Under five minutes
SB-00 · Department
Storage Basics
How macOS counts capacity before anyone deletes anything. Inventory pass completed August 5, 2026, carrying 3 worked fiches.
Every cleanup argument ends at the same place: a number somebody read somewhere. This department builds the reading habits first, checking capacity four ways, watching which categories swell without permission, and naming the anonymous System Data bucket so it stops intimidating.
Nothing here asks for software yet. The pieces are deliberately short on drama and long on measurements you can reproduce immediately, because a drive audited calmly stays healthy longer than one purged in panic.
SB-03
July 15, 2026
July 15, 2026
What System Data means on Mac storage
The System Data bucket gathers caches, logs, virtual memory and more; a plain tour of what lives inside.
- Difficulty: Intermediate
- Time: Twelve minute read
SB-02
June 10, 2026
June 10, 2026
Why your Mac storage fills up while you sleep
Caches, snapshots, synced libraries and growing mail stores explain silent growth; here is how each behaves.
- Difficulty: Beginner
- Time: Ten minute read
Reading order. Start with the measurement piece if you are pressed for time; every later guide assumes its numbers.