As instruções em /etc/default/grub
dizer para executar 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
mas esse comando não foi encontrado no GRUB,
grub> vbeinfo
error: can't find command `vbeinfo'.
ou no terminal:
$ vbeinfo
vbeinfo: command not found
Cadê?