The Windows Search Indexer is a background service that continuously scans your hard drive, cataloguing file names, metadata, and document contents so that your Start Menu searches return instant results. By default, Windows 11 is often configured to aggressively index any external storage you plug into your computer. If you frequently connect large USB flash drives or massive external hard drives containing thousands of backup files, the indexer will immediately spin up and begin scanning them. This can cause high CPU usage, slow down file transfers, and prevent you from safely ejecting the drive. You can configure Windows to ignore removable drives entirely.
How to Stop Indexing External Drives
You can modify these indexing locations using the classic control panel.
- Click the Start Button on your taskbar.
- Type Indexing Options into the search bar and press Enter.
- The classic Indexing Options window will appear. Click the Modify button at the bottom left.
- A new window titled “Indexed Locations” will open. Look at the “Change selected locations” box at the top.
- This box displays all of your connected drives. Locate your removable USB drive or external hard drive (e.g., Drive D: or E:).
- If there is a checkmark next to the removable drive, click the checkbox to uncheck it.
- Click OK to save your modifications.
- Click Close to exit the main Indexing Options window.
Windows will immediately purge the external drive’s contents from its search database and cease all background scanning on that disk. Your internal C: drive will continue to be indexed normally, ensuring your local apps and documents remain instantly searchable.