Lock a Folder on an External Hard Drive

External hard drives often carry backups, client files, project archives, photos, videos, or field-work documents between computers. If only one or two folders need protection, GiliSoft File Lock Pro helps you lock, hide, or write-protect selected folders without changing the entire drive workflow.

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When This Problem Happens

You may not want full-drive encryption every time. The more common situation is narrower: an external hard drive is shared for backups or file transfer, but a client folder, finance folder, design source folder, or personal archive should not be opened casually on another PC.

The drive is plugged into office, home, client, or partner computers.
Most files can stay accessible, but selected folders need stronger privacy.
Some folders should be visible but not edited, renamed, moved, or deleted.
You need a repeatable folder-level workflow instead of re-zipping files each time.

How File Lock Pro Helps

1. Use lock mode when the folder should not open without the password.

2. Use hide mode when the folder should stay out of casual view on the drive.

3. Use write protection when files can be viewed but should not be changed, deleted, moved, or renamed.

4. Keep protection focused on selected folders, so the rest of the external hard drive remains usable.

For whole-drive protection, a USB encryption product may be a better fit. For blocking USB device use on a PC, USB permission-control software is the more direct choice.