Jawaban singkat:
#GRUB_HIDDEN_TIMEOUT=0
#GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT_STYLE=hidden
Atau cukup hapus dua baris pertama pada entri di atas dan ganti dengan
GRUB_TIMEOUT_STYLE=[menu|countdown|hidden]
Penjelasan:
Sampai saat ini (2016) opsi GRUB_HIDDEN_TIMEOUT
dan telah usang . Jadi jangan menggunakannya lagi. Sebagai gantinya, Anda bisa menggunakannya .GRUB_HIDDEN_TIMEOUT_QUIET
GRUB_TIMEOUT_STYLE
Menurut info -f grub -n 'Simple configuration'
, Anda memiliki ini:
'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.