The root user should not have an empty password. If you leave this empty, the root account will be disabled and the system's initial user account will be given the power to become root using the "sudo" command.
Aseqdac aẓar ur ilaq ara ad yesɛu awal n uɛeddi d ilem. Ma yella yeǧga-t d ilem, amiḍan aẓar ad yens syen amiḍan n useqdac agejdan n unagraw ad yesɛu tazmert ad yuɣal d aẓar s useqdec n tladna "sudo".