Source Context Failing checks
[[!meta title="Adding boot options using the Boot Loader"]]
The Boot Loader is the first screen that appears when starting Tails.
You can use the Boot Loader to add *boot options*. Boot options are special parameters that can be useful to troubleshoot or work around hardware support problems. For example, our [[list of known issues with graphics cards|support/known_issues/graphics]] document boot options for different graphics cards.
<div class="tip">
<p>The <span class="guilabel">Troubleshooting Mode</span> of the Boot Loader disables some features of the
Linux kernel and might work better on some computers. You can try this option if you
think you are experiencing errors related to hardware compatibility while
starting Tails.</p>
</div>
[[!toc levels=1]]
Depending on the computer, the Boot Loader might be either *GRUB* or *SYSLINUX*.
<a id="syslinux"></a>
Using *SYSLINUX*
This is what *SYSLINUX* looks like:
[[!img install/inc/screenshots/syslinux.png link="no" alt="Black screen ('SYSLINUX') with Tails
logo and 2 options: 'Tails' and 'Tails (Troubleshooting Mode)'."]]
<div class="note">
<p>If your Boot Loader looks different, refer to our instructions below on
adding a boot option [[using GRUB|boot_options#grub]].</p>
To add a boot option in *SYSLINUX*:
<!-- Keep in sync with install/inc/steps/restart_first_time.inline.mdwn. -->
Press **Tab** when *SYSLINUX* appears.
A list of boot options
appears at the bottom of the screen.
[[!img syslinux-with-options.png link="no" alt="SYSLINUX with
a list of options starting with '/live/vmlinuz' at the bottom"]]
Press <span class="keycap">Space</span> and type the boot option that you want to add.
If you want to add more than one boot option, type them one after the other and separate them with a <span class="keycap">Space</span>.
Press <span class="keycap">Enter</span> to start Tails.
<a id="grub"></a>
Using *GRUB*
This is what *GRUB* looks like:
[[!img install/inc/screenshots/grub.png link="no" alt="Black screen ('GNU GRUB') with Tails
logo and 2 options: 'Tails' and 'Tails (Troubleshooting Mode)'."]]
<p>If your Boot Loader looks different, refer to our instructions on
adding a boot option [[using SYSLINUX|boot_options#syslinux]] above.</p>
To add a boot option in *GRUB*:
Press **e** when GRUB appears.
A new screen appears with more options.
[[!img grub-with-options.png link="no" alt="GRUB with a list of
options starting with 'setparams Tails'"]]
Navigate with the arrows of the keyboard to the end of the line that starts with <span class="code">linux</span>. The line is most likely wrapped and displayed on several lines on the screen but it is a single configuration line.
Type the boot option that you want to add.
Press **Ctrl+X**, **F10**, or **Fn+F10** to start Tails.