Troubleshooting.
Fixing what gets in the way of a clean-up: missing Full Disk Access, and startup items that keep coming back.
Your Startup Disk Is Almost Full: What to Do on a Mac
What "Your startup disk is almost full" and "Your disk is almost full" mean on a Mac, what to clear first, and how to be warned at a level you choose.
macOS 27 System Data Huge After Updating? What to Check
System Data can look huge after the macOS 27 update. What macOS keeps there, how long to wait, and which snapshots, swap and app data to check if it stays.
idleassetsd: When Aerial Wallpapers Fill Your Mac's Disk
On macOS Sonoma and Sequoia, idleassetsd downloads Aerial wallpapers and can leave aborted downloads only root can see. How to check your Mac and stop it.
Purgeable Space on Mac: What It Is and How to Free It
Purgeable space is storage macOS can clear by itself, such as Time Machine snapshots and caches. How to see it, why it can block a copy, and how to free it now.
Full Disk Access on Mac: How to Turn It On, and Is It Safe?
Where Full Disk Access is in System Settings, what it lets an app read, why you must quit and reopen the app, and how to decide whether an app should have it.
Mac Startup Items: What Really Starts When Your Mac Boots
Login items are only one of five ways something can start itself on a Mac. What each one is, where it lives, and which are safe to switch off.