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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>
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<li>On a few computers, it might currently be impossible to start Tails.
But, it is very hard to know without trying.</li>
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</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 reach the <span class="application">Boot Loader Menu</span>, you
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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 id="boot-menu">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
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following screenshot is an example of a 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>
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    <tr><td>HP</td><td>F9, Esc</td></tr>
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    <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>
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  <p>If the computer starts on another operating system or returns an
  error message, shut down the computer again and repeat step
  3 for all the possible boot menu keys identified in step 2.</p>

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  <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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  <div class="note">
  <p>If the boot menu key that works on your computer is a different one than
  the first in the list, please let us know. You can write to
  [[sajolida@pimienta.org]] (private email).</p>
  </div>
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</li>
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</ol>
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<p id="animation">This animation explains how to use the boot menu key:</p>
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<video controls="true" 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" />
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  <source src="https://tails.boum.org/install/inc/videos/boot-menu-key.mp4" type="video/mp4" />
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</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 id="bios-settings">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">
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<p>Take note of the changes that you apply to the BIOS settings. That way, you
can revert the changes if they prevent the computer from starting on its usual
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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 USB stick before starting from the internal hard disk.</p>
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  </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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<div class="bug" id="report">
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<p>If none of these options work, we are sorry but you might not be
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able to use Tails on this computer. Feel free to
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[[!toggle id="report-toggle-2" text="report the problem to our help desk"]].</p>
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</div>
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[[!toggleable id="report-toggle-2" text="""
<span class="hide">[[!toggle id="report-toggle-2" text=""]]</span>
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[[!inline pages="install/inc/steps/reporting.inline" raw="yes"]]
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"""]]