Reboot to UEFI BIOS on Steam Deck
- In Desktop Mode, create a text file called “uefireboot.desktop”
- Open this file in a text editor (Kate)
- Enter following content
[Desktop Entry] Type=Application Name=Reboot to UEFI Comment=Reboot to UEFI Exec=systemctl reboot --firmware-setup Icon=steamdeck-gaming-return Terminal=true Categories=System
- Mark the file as executable
- Right click on file → Properties → Permissions → Check `Is executable`
- Or use
chmod +x ./uefireboot.desktop
- Run the .desktop file