And if you are using Ubuntu, encrypting the hard disk isnt that difficult.
Below, we have shared some simple steps to encrypt your hard disk in Ubuntu.
First, load the Ubuntu installation disk and start the installation process.

After all the selections, grab the Install Now button to begin the installation process.
After that, snag the installation process by clicking on the Install Now button.
You would then have to set up your custom security key.

Check the box saying Overwrite empty disk space if you wish to perform that action.
pick the Install Now button and follow up with the typical Ubuntu installation.
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