<p>If you get the error message <i>Sorry, impossible to create a Persistent Storage on this device</i>, you need to follow our instructions on [[installing Tails on a USB stick|install]].</p>
<p>We recommend choosing a long passphrase made of 5 to 7 random words. <a href="https://theintercept.com/2015/03/26/passphrases-can-memorize-attackers-cant-guess/">Learn about the maths behind memorizable and secure passphrases.</a></p>
<p>To help you remember your passphrase, you can write it on a piece of paper, store it in your wallet for a few days, and destroy it once you know it well.</p> </div>