When your Mac’s storage is almost full, it slows down and updates fail.
1. See what’s using space
System Settings > General > Storage.
2. Empty the Bin
Files in the Bin still use space.
3. Store in iCloud
Turn on Store in iCloud for Desktop, Documents and Photos.
4. Remove large files
Sort the Documents section by size and delete what you don’t need.
5. Clean the Downloads folder
Old installers (.dmg files) take up space.
6. Delete unused apps
Drag unused apps from Applications to the Bin.
