The Diskzy blog
Plain guides to Mac storage: what fills your disk, what is safe to remove, and how.
- Time Machine local snapshots: what they are, how to deleteLocal snapshots are copies of your disk that Time Machine keeps on your Mac. How to list them, when to leave them alone, and how to delete them safely.October 10, 2026 · 5 min read
- Do you need a Mac cleaner app? An honest answermacOS handles most of its own housekeeping. Here is what it does by itself, when a cleaner app is unnecessary, what to be wary of, and when one helps.October 10, 2026 · 5 min read
- Why Docker takes so much disk space on Mac, and the fixDocker Desktop keeps images, containers, volumes and build cache in one virtual disk file. How to see what is inside it and reclaim the space safely.October 10, 2026 · 5 min read
- How to check what is taking up space on your MacFour ways to see what is using your Mac's disk: Storage in System Settings, Finder folder sizes, Finder search by size, and Terminal. With their limits.October 10, 2026 · 5 min read
- How to clear the cache on a Mac (and when not to)Where app, browser and system caches live on a Mac, how to clear each one safely, what you lose by doing it, and the cases where you should leave them.October 10, 2026 · 5 min read
- How to completely uninstall an app on Mac, with leftoversDragging a Mac app to the Trash leaves support files, caches, preferences and launch agents behind. Here is where they live and how to remove them safely.October 10, 2026 · 5 min read
- How to free up space on a Mac: what to delete firstAn ordered list of what to delete first on a full Mac, from the Trash and old downloads to caches, backups and snapshots, with what each one costs you.October 10, 2026 · 5 min read
- "Your startup disk is almost full": what to do right nowStartup disk almost full on your Mac? Free space safely in a few minutes: what to delete first, what never to touch, and why a restart helps.October 10, 2026 · 5 min read
- What is System Data on Mac, and how do you clear it?System Data is the Mac storage category for everything macOS cannot label: caches, logs, swap, snapshots and app files. Here is what is safe to clear.October 10, 2026 · 5 min read
- Why Xcode takes so much space, and how to get it backXcode fills your Mac with DerivedData, device support files, simulators and archives. Here are the exact paths and commands, and what each one costs.October 10, 2026 · 5 min read
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