Such encrypted volumes are not hidden.<p>An attacker in possession of the device can know that there is an encrypted
volume on it. Take into consideration that you can be forced or tricked to give
out its passphrase.</p>
<p>An attacker in possession of the device can know that there is an encrypted volume on it. Take into consideration that you can be forced or tricked to give out its passphrase.</p>
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<h2 id="comparison">Comparison between <i>LUKS</i> and <i>VeraCrypt</i></h2>
If you want to securely erasoverwrite all data on the device, choose to <span class="guilabel">**Overwrite existing data with zeroes</span>** in the **Erase** drop-down listmenu.