you need to read the sabayon linux wiki as sabayon linux is gentoo based - what applies to gentoo applies to sabayon linux
http://www.sabayonlinux.org/wiki/index. ... ownload.3F
besides, editing grub is universal thing in all distros.
you don't know what root is? The admin level ?
try hitting Alt F2 and type kdesu konqueror - you will end up with a FileManager that is root than browse to /boot/grub and edit the grub.conf file
better also see for hours of reading:
http://www.sabayonlinux.org/wiki/index. ... #Resources