vim /etc/default/grub
dodaj linię
GRUB_RECORDFAIL_TIMEOUT=1
GRUB_DEFAULT=0 GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_RECORDFAIL_TIMEOUT=1 GRUB_TIMEOUT=10 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash” GRUB_CMDLINE_LINUX=”"