Las instrucciones en /etc/default/grub
decir correr vbeinfo
,
# The resolution used on graphical terminal # note that you can use only modes which your graphic card supports via VBE # you can see them in real GRUB with the command `vbeinfo' #GRUB_GFXMODE=640x480
pero ese comando no se encuentra en GRUB,
grub> vbeinfo
error: can't find command `vbeinfo'.
o en la terminal:
$ vbeinfo
vbeinfo: command not found
¿Dónde está?