[ Thanks to Boris
Derzhavets for this link. ]
“Update file /etc/default/grub as follows
GRUB_DEFAULT=0
# GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo
Debian`
GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash”
# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console
# 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’