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<ol>

<li>
   <p>
     <span class="usb">Shut down the computer while leaving the USB stick plugged in.</span>
   </p>
   <p class="clone upgrade-tails">Shut down the computer.</p>
   <p class="clone">Plug in the other Tails USB stick that you want to
   <span class="install-clone">install</span>
   <span class="upgrade">upgrade</span>
   from.</p>
   <p class="upgrade-tails">Unplug your Tails USB stick while leaving the intermediary USB stick plugged in.</p>
</li>

<li>
  <p>Switch on the computer.</p>
</li>

<li>
   <p>If the computer starts on Tails, the <span class="application">Boot Loader Menu</span>
   appears and Tails starts automatically after 4 seconds.</p>

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   <p>[[!img install/inc/screenshots/tails_boot_menu.png link="no" alt="Black screen with Tails artwork. Boot Loader Menu with two options 'Tails' and 'Tails (Troubleshooting Mode)'."]]</p>
</li>
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</ol>
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<h2>Troubleshooting: Tails does not start at all</h2>
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<p>The following section applies if the <span class="application">Boot Loader Menu</span>
   does not appear when starting on a USB stick.</p>
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<p>It is quite common for computers not to start automatically on a
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   USB stick with Tails installed. Here are some troubleshooting techniques. You should try them
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   one after the other.</p>
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<h3>Getting to the boot menu</h3>
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<p>On most computers, you can press a *boot menu key* to display a list of
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   possible devices to start from. The following instructions explain how
   to display the boot menu and start on the USB stick. The following
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   screenshot is an example of such boot menu:</p>
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<p>[[!img install/inc/screenshots/bios_boot_menu.png link="no" alt=""]]</p>
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<ol>
  <li><p>Shut down the computer.</p></li>
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  <li><p>Make sure that the first USB stick is plugged in the computer.</p></li>
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  <li>
    <p>Identify the potential boot menu keys for the computer depending on
    the computer manufacturer in the following list:</p>
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      <table>
        <tr><th>Manufacturer</th><th>Key</th></tr>
        <tr><td>Acer</td><td>Esc, F12, F9</td></tr>
        <tr><td>Asus</td><td>Esc, F8</td></tr>
        <tr><td>Dell</td><td>F12</td></tr>
        <tr><td>Fujitsu</td><td>F12, Esc</td></tr>
        <tr><td>HP</td><td>Esc, F9</td></tr>
        <tr><td>Lenovo</td><td>F12, Novo, F8, F10</td></tr>
        <tr><td>Samsung</td><td>Esc, F12, F2</td></tr>
        <tr><td>Sony</td><td>F11, Esc, F10</td></tr>
        <tr><td>Toshiba</td><td>F12</td></tr>
        <tr><td>others&hellip;</td><td>F12, Esc</td></tr>
      </table>
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  </li>
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  <li>
    <p>Switch on the computer.</p>
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    <p>Immediately press several times the first potential boot menu key
    identified in step 3.</p>
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    <ul>
      <li>
        <p>If a boot menu with a list of devices appears, select your USB stick
      and press <span class="keycap">Enter</span>.</p>
      </li>
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      <li>
        <p>If the computer starts on another operating system, then:</p>
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        <ol>
          <li><p>Shut down the computer.</p></li>
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          <li><p>Press-and-hold the potential boot menu key identified in step 3.</p></li>
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          <li><p>Switch on the computer again while holding the potential boot menu key pressed.</p>
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            <ul>
              <p>If a boot menu with a list of devices appears, select your USB stick
               and press <span class="keycap">Enter</span>.</p>
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              <p>If the computer starts on another operating system or returns an
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               error message, then shut down the computer again and repeat step
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               4 for all the potential boot menu keys identified in step 3.</p>
            </ul>
          </li>
        </ol>
      </li>
    </ul>

    <p>If none of the potential boot menu keys identified in step 3 work or if
    the USB stick does not appear in the list, then try the second
    troubleshooting technique described below.</p>
  </li>
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</ol>
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<h3>Check our list of known issues</h3>
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<p>Similar problems might have been reported already for your model of computer
   in our [[list of known issues|support/known_issues]].</p>
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<h3>Edit the BIOS settings</h3>
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<p>You might need to edit the BIOS settings of the computer.</p>
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   <div class="tip">
   <p>Search for the user manual of the computer on the website of its
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   manufacturer to learn how to edit the BIOS settings:</p>
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   <ul>
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     <li><a href="http://us.acer.com/ac/en/US/content/drivers">Acer</a></li>
     <li><a href="https://www.asus.com/us/support/">Asus</a></li>
     <li><a href="https://www.dell.com/support/home/us/en/19/Products/">Dell</a></li>
     <li><a href="https://www.fujitsu.com/global/support/products/software/manual/">Fujitsu</a></li>
     <li><a href="https://support.hp.com/us-en/products/">HP</a></li>
     <li><a href="http://support.lenovo.com/us/en/">Lenovo</a></li>
     <li><a href="http://www.samsung.com/us/support/downloads">Samsung</a></li>
     <li><a href="http://esupport.sony.com/US">Sony</a></li>
     <li><a href="http://support.toshiba.com/support/products?cat=Computers">Toshiba</a></li>
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   </ul>
   </div>

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<p>In the BIOS settings, try to apply the following changes one by one and
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   restart the computer after each change. Some changes might not
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   apply to certain computer models.</p>
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   <div class="caution">
   <p>Take note of the changes that you apply to the BIOS settings, to be
   able to revert them if they prevent the computer to start on its usual
   operating system.</p>
   </div>

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<ol>
  <li>
   <p>Edit the <strong>Boot Order</strong>. Depending on the computer model you might
   see an entry for <strong>removable devices</strong> or <strong>USB media</strong>. Move this entry
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   to the top of the list to force the computer to try to start from
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   the first USB stick before starting from the internal hard disk.</p>
  </li>

  <li>
    <p>Disable <strong>Fast boot</strong>.</p>
  </li>

  <li>
    <p>If the computer is configured to start with <strong>legacy BIOS</strong>, try to
   configure it to start with <strong>UEFI</strong>. Else, if the computer is configured
   to start with <strong>UEFI</strong>, try to configure it to start with <strong>legacy
   BIOS</strong>. To do so, try any of the following options if available:</p>

    <ul>
      <li>Enable <strong>Legacy mode</strong></li>
      <li>Disable <strong>Secure boot</strong>
         (see the <a href="https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/disabling-secure-boot">Microsoft documentation</a>)</li>
      <li>Enable <strong>CSM boot</strong></li>
      <li>Disable <strong>UEFI</strong></li>
    </ul>
   </li>

   <li><p>Try to upgrade the BIOS to the latest version provided by the manufacturer.</p></li>
</ol>
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<h3>Report the problem to our support team</h3>
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   <div class="bug">
   <p>If none of these options work, we are sorry but you might not be
   able to use Tails on this computer.</p>
   </div>

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<p>Please, [[send an email to our support team|support/talk]], including
   the following information:</p>
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<ol>
  <li><p>Which version of Tails are you trying to start?</p></li>
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  <li><p>How did you verify the USB image?</p></li>
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  <li><p>Which is the brand and model of the computer?</p></li>
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  <li><p>What exactly happens when trying to start? Report the complete error
      message that appears on the screen, if any.</p></li>
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  <li><p>Which program did you use to install your USB stick:</p>
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    <ul>
      <li><span class="application">Etcher</span>,</li>
      <li><span class="application">GNOME Disks</span>,</li>
      <li><span class="application">Tails Installer</span>, or</li>
      <li><span class="command">dd</span> on the command line?</li>
    </ul>
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    <p>Note that these are the only supported installation methods.</p>
  </li>
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  <li><p>Have you been able to start Tails successfully on this computer
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      before, from another USB stick or DVD, or with another version of Tails?
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      If so, which ones?</p></li>
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  <li>Does the same USB stick start successfully on other computers?</li>
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</ol>