What Is Filling Up My Storage?

Built-in categories provide a supported baseline.

Open Windows Storage or macOS storage settings and record the largest categories. System Data and Other are aggregates, not automatic proof of malware or waste.

Temporary files and downloads still need review.

Use the platform cleanup controls, inspect personal downloads, empty application trash where appropriate, and avoid deleting unknown system directories manually.

Offloading can create a single fragile copy.

Confirm a second recoverable copy before moving photos, projects, or archives to external or cloud storage. Test a sample restore.

Settings and workflows can expose recurring causes.

Review download locations, offline cloud copies, application caches, media libraries, phone backups, and update residue with current platform guidance.