WHFS · Mac storage since two domains ago
Field notes on Mac storage and free space. Measured, not guessed; appraised against criteria, not slogans.
Headroom maps where Mac drive space goes: ordered cleanup guides, tool criteria, purgeable arithmetic and free field-kit worksheets. Updated notes weekly-ish.
How macOS counts capacity before anyone deletes anything. 3 fiches: How to check free space on a Mac; What System Data means on Mac storage; Why your Mac sto
Ordered steps that recover space without gambling your files. 4 fiches: Time Machine local snapshots, explained; Find large files on a Mac for free; Free up
Analyzers, cleaners and terminal craft judged by stated criteria. 4 fiches: Mac disk space analyzers compared; Check folder size in Terminal: du and df; Do M
Where big files live after the internal drive fills up. 2 fiches: Purgeable space on macOS, explained; Offloading files to an external drive on a Mac
The living record: launches, method changes and plans. 3 fiches: Coverage roadmap: autumn 2026; A working order for a disk audit; Launch note: what this desk
Planned additions across all four subject doors plus the kit, announced openly and dated as plans.
Measure, rank, act, verify, record: the five-stage order every Headroom guide follows and why it holds.
Why this publication exists, what each department holds today, and the standard we hold ourselves to.
Why macOS claims capacity it hasn't freed yet, how thinnables release on demand, and what this means buying drives.
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.
Why hourly local snapshots appear, when they thin, and the supported way to inspect or remove one.
Treemaps, column meters and terminal lists answer different needs; criteria to match an analyzer to your desk.
The System Data bucket gathers caches, logs, virtual memory and more; a plain tour of what lives inside.
Finder search, sorted views and du scans surface the space hogs; how to read results before deleting.
Two commands answer different questions: du weighs trees, df reports volumes; syntax, flags and interpretation.
A measured sequence for reclaiming space safely: measure, empty trash families, trim caches, move libraries.
An unsentimental look at cleaner subscriptions: what they automate legitimately, what fear marketing inflates.
Formatting choices, library relocation care, launch-key discipline and verification habits for offload duty.
Caches, snapshots, synced libraries and growing mail stores explain silent growth; here is how each behaves.
Which cache families tolerate deletion, which resent it, and the difference re-download time makes.
What TreeSize gave Windows admins, equivalent capabilities Mac users reach for, and the heritage connection here.
How this desk works. Measure first, delete second, log both numbers; the printable routine lives on the field kit page and its reasoning on the audit order note. Corrections land visibly: write [email protected], policy inside the editorial register. Common questions sit ready on the short answers shelf, and the mailbox rules are stated plainly on the privacy policy.
Elsewhere on the web. A full drive is rarely only a Mac problem, so the desk keeps a short shelf of neighbouring references:
the French phrase for what leaving a cloud plan actually costs, which is the arithmetic behind every “just put it online” suggestion.
because the files an audit flags still have to travel somewhere afterward, intact and without a public link.
an Italian hardware desk, for readers whose next decision is an enclosure or a drive rather than an application.