That is not grub that you are referring to... What you are talking about is very likely some of kdm, gdm or xdm
grub is a bootloader. It takes over the execution from the BIOS and loads the operating system, usually presenting a list of available operating systems.
kdm, gdm and xdm are display managers. Such performs a graphical login and starts the window manager or desktop environment of choice.
If it is kdm you have, then to allow root logins, edit the file /etc/kde3/kdm/kdmrc, change there the AllowRootLogin=false to AllowRootLogin=true and restart kdm by /etc/init.d/kdm restart to make the change come into effect.
Last edited by dastrike; 02-24-2005 at 10:20 PM.
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