CTo see which packages are installed automatically every time you start Tails, choose <span class="menuchoice"> <span class="guimenu">Applications</span> ▸ <span class="guisubmenu">System Tools</span> ▸ <span class="guimenuitem">Synaptic Package ManagerAdditional Software</span></span>.
To see which packages are installed automatically every time you start Tails, choose <span class="menuchoice"> <span class="guimenu">Applications</span> ▸ <span class="guisubmenu">System Tools</span> ▸ <span class="guimenuitem">Additional Software</span></span>.
Write your additional `sources.list` files in the <span class="filename">apt-sources.list.d</span> folder.For example, to add the `non-free` sections of Debian 101 (Busterllseye), backports, and security updates, you can create a file named<span class="filename"> */live/persistence/TailsData_unlocked/apt-sources.list.d/non-free.list</span>* with the following content:
For example, to add the `non-free` sections of Debian 11 (Bullseye), backports, and security updates, you can create a file named */live/persistence/TailsData_unlocked/apt-sources.list.d/non-free.list* with the following content:
