Have a private document on your desktop OS? Here's how to keep it secure on Linux, MacOS, and Windows.

Next, select Encrypt a non-system partition/drive and select Next. Select the drive you want to encrypt and follow the instructions on the screen.

You can encrypt every file in the folder. You can put the folder into an encrypted .zip archive, or into an encrypted vault. [Have a tech question? Ask PCWorld Contributing Editor Lincoln Spector.

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