Mac storage basics · Finding big files, Downloads and the Trash

Why can't I empty the Trash on my Mac?

Short answer: Usually a file is still in use, locked, or lacks permission. Quit apps or restart, untick Locked in Get Info, hold Option while emptying, and run First Aid if it persists.

The usual causes are a file still in use by an open app, a locked file, or a file you don't have permission to delete.

  1. Quit the app that might be using it (or restart the Mac), then try again.
  2. Select the item in the Trash, press Command-I and untick Locked if it's ticked.
  3. Hold Option while choosing Empty Trash to skip locked-item prompts.

If an item came from an external drive, connect the drive before emptying. Persistent failures can mean disk errors — run First Aid in Disk Utility.

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