Why deleting files does not free up space on mac

This is a common issue that deleting files does not free up space on Mac. You need additional steps to clear space on Mac.

To free up a massive amount of storage space on your Mac, you'll need to look beyond just deleting large files. The operating system often holds onto huge chunks of "hidden" data, like old backups and mail caches, that can remain even after you clean up your documents. A systematic approach is the best way to reclaim those tens of gigabytes.

A special mention goes to the "System Data" or "Other" category in your storage view. This is a catch-all for cache files, logs, and local backups that can easily grow out of control. If you are not comfortable using Terminal to delete Time Machine snapshots manually, a safer alternative is a dedicated Mac cleaning tool. An app like CleanMate can automate the process by scanning for system junk, mail attachments, and old iOS files in one go, removing the risk of deleting something critical.

For a quick win that doesn't require navigating system folders, you can also simply delete old media and app installers from your Downloads folder, and move large photo or video libraries to an external drive.