switch from non-root user to root
root # useradd -d /home/cyno -m cyno
root # passwd cyno
root # usermod -G wheel,audio cyno
root # gpasswd -a cyno wheel
root # chmod +s /bin/su
root # useradd -d /home/cyno -m cyno
root # passwd cyno
root # usermod -G wheel,audio cyno
root # gpasswd -a cyno wheel
root # chmod +s /bin/su