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<h2>Make the computer start on the USB stick</h2>
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<p>This step is the most complicated one as it depends a lot on the
model of the computer:</p>
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<ul>
<li>On most computers, our basic instructions to get to the boot menu
work fine.</li>
<li>On some computers, you might have to do more advanced techniques,
like editing the BIOS settings.</li>
<li>On few computers, it might currently be impossible to start Tails
but it's very hard to know without trying.</li>
</ul>
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<p>The goal is to reach the <span class="application">Boot Loader
Menu</span> of Tails:</p>
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<p>[[!img install/inc/screenshots/boot_loader_menu.png link="no" alt="Black screen with Tails artwork. Boot Loader Menu with two options 'Tails' and 'Tails (Troubleshooting Mode)'."]]</p>
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<div class="next">
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<p>After you reached the <span class="application">Boot Loader Menu</span>, you
can skip the rest of this section and <a href="#greeter">wait until
<span class="application">Tails Greeter</span> appears</a>.</p>
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</div>
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<h3>Getting to the boot menu</h3>
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<p>On most computers, you can press a <em>boot menu key</em> to display
a list of possible devices to start from. The following instructions
explain how to display the boot menu and start on the USB stick. The
following 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>
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<li>
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  <p class="usb">Shut down the computer while leaving the USB stick plugged in.</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>
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</li>
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<li>
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  <p>Identify the possible boot menu keys for the computer depending on
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  the computer manufacturer in the following list:</p>

  <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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  <div class="tip">
  <p>On many computers, a message is displayed very briefly when switching on
  that also explains how to get to the boot menu or edit the BIOS settings.</p>
  </div>
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</li>
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<li>
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  <p>Switch on the computer and immediately press several times the first
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  possible boot menu key identified in step 2.</p>
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</li>
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<li>
  <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
  error message, then shut down the computer again and repeat step
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  3 for all the possible boot menu keys identified in step 2.</p>
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</li>
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</ol>
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<p>This animation explains how to use the boot menu key:</p>

<video controls width="640" height="360" poster="https://tails.boum.org/install/inc/videos/boot-menu-key.png">
  <source src="https://tails.boum.org/install/inc/videos/boot-menu-key.webm" type="video/webm">
</video>

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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
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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>If none of the possible boot menu keys from the previous technique work or if
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the USB stick does not appear in the boot menu, you might need to edit your BIOS
settings.</p>
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<div class="tip">
<p>Search for the user manual of the computer on the website of its
manufacturer to learn how to edit the BIOS settings:</p>
<ul>
  <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>
</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
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
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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></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>