I recently stumbled upon startup manager, which is a nice GUI for edititing grub files. Attached is an ebuild for this software. Reproducible: Always
Created attachment 138616 [details] gnome-extra/startupmanager-1.9.9 I'm not sure if that is correct as it is, cause I have no clue of python. But the software installed by this ebuild worked fine.
This is now in the sunrise overlay. You can find it at: http://overlays.gentoo.org/svn/proj/sunrise/reviewed/gnome-extra/startupmanager
unsupported and unmaintained