You can use the Boot Loader to modify the *boot options*. Boot options are special parameters used to troubleshoot or work around hardware support problems. For example, our [[list of known issues with graphics cards|support/known_issues/graphics]] documents boot options for different graphics cards.

You can use the Boot Loader to modify the *boot options*. Boot options are special parameters used to troubleshoot or work around hardware support problems. For example, our [[list of known issues with graphics cards|support/known_issues/graphics]] documents boot options for different graphics cards.

In both *GRUB* and *SYSLINUX*, the keyboard layout of the Boot Menu is set to English (US).

[[!img english_us_keyboard.png alt=""]]

[[!img install/inc/screenshots/syslinux.png link="no" class="screenshot" alt="Black screen ('SYSLINUX') with Tails
logo and 2 options: 'Tails' and 'Tails (Troubleshooting Mode)'."]]

[[!img install/inc/screenshots/syslinux.png link="no" class="screenshot" alt="Black screen ('SYSLINUX') with Tails
logo and 2 options: 'Tails' and 'Tails (Troubleshooting Mode)'."]]

[[!img syslinux-with-options.png link="no" class="screenshot" alt="SYSLINUX with
a list of options starting with '/live/vmlinuz' at the bottom"]]

[[!img syslinux-with-options.png link="no" class="screenshot" alt="SYSLINUX with
a list of options starting with '/live/vmlinuz' at the bottom"]]

[[!img install/inc/screenshots/grub.png link="noclass="screenshot" alt="Black screen ('GNU GRUB') with Tails
logo and 23 options: 'Tails' and 'Tails (Troubleshooting Mode)' and 'Tails (External Hard Disk)'."]]

[[!img install/inc/screenshots/grub.png class="screenshot" alt="Black screen ('GNU GRUB') with Tails
logo and 3 options: 'Tails' and 'Tails (Troubleshooting Mode)' and 'Tails (External Hard Disk)'."]]

[[!img grub-with-options.png link="noclass="screenshot" alt="GRUB with a list of
options starting with 'setparams Tails'"]]

[[!img grub-with-options.png class="screenshot" alt="GRUB with a list of
options starting with 'setparams Tails'"]]

To add a boot option, navigate with the arrows of the keyboard to the end of the line that
starts with <span class="code">linux</span>`linux`.
Type the boot option that you want to add. The line is most likely
wrapped and displayed on several lines but it is a single configuration line.

To add a boot option, navigate with the arrows of the keyboard to the end of the line that
starts with `linux`.
Type the boot option that you want to add. The line is most likely
wrapped and displayed on several lines but it is a single configuration line.

Modify the boot options as needed.on the USB stick

Modify the boot options on the USB stick

To use modified boot options automatically when restarting Tails, you can save these changes to your Tails USB stick.

<p>These modifications are deleted each time you upgrade Tails. ([[!tails_ticket 18268]])</p>

To do so:

When starting Tails, [[set up an administration password|doc/first_steps/welcome_screen/administration_password]].

Open a *Terminal*.

Execute to following command to allow modifying the content of the Tails partition on the USB stick.

<p class="command">sudo mount -o remount,rw /lib/live/mount/medium/</p>

Execute the following command to edit the configuration of the Boot Loader.

If your computer uses *SYSLINUX*:

<p class="command">gnome-text-editor admin:///lib/live/mount/medium/syslinux/live64.cfg</p>

The section `label live` corresponds to the default boot options.