It is possible to reboot the Linux system into the firmware (BIOS) setup interface on modern servers, laptops, and desktops by using the following command when your init is systemd:
sudo systemctl reboot --firmware-setup

For more info see https://www.cyberciti.biz/faq/howto-reboot-linux/ my page. #Linux #Sysadmin #Debian #RHEL #Ubuntu