Respuesta corta:
#GRUB_HIDDEN_TIMEOUT=0
#GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT_STYLE=hidden
O simplemente elimine las dos primeras líneas en la entrada anterior y reemplácela con
GRUB_TIMEOUT_STYLE=[menu|countdown|hidden]
Explicación:
A partir de este momento (2016), las opciones GRUB_HIDDEN_TIMEOUT
y yaGRUB_HIDDEN_TIMEOUT_QUIET
han quedado en desuso . Así que no los uses más. En cambio, puedes usar GRUB_TIMEOUT_STYLE
.
Según info -f grub -n 'Simple configuration'
, tienes esto:
'GRUB_TIMEOUT_STYLE'
If this option is unset or set to 'menu', then GRUB will display
the menu and then wait for the timeout set by 'GRUB_TIMEOUT' to
expire before booting the default entry. Pressing a key interrupts
the timeout.
If this option is set to 'countdown' or 'hidden', then, before
displaying the menu, GRUB will wait for the timeout set by
'GRUB_TIMEOUT' to expire. If <ESC> is pressed during that time, it
will display the menu and wait for input. If a hotkey associated
with a menu entry is pressed, it will boot the associated menu
entry immediately. If the timeout expires before either of these
happens, it will boot the default entry. In the 'countdown' case,
it will show a one-line indication of the remaining time.