Grub2

Customize Grub2 manually

• http://askubuntu.com/questions/54067/how-do-i-safely-change-grub2-screen-resolution

sudo gedit /etc/default/grub
sudo update-grub

#default choice, starts with 0
GRUB_DEFAULT=0
#timeout
GRUB_TIMEOUT=30
#play tune
GRUB_INIT_TUNE="2000 400 4 0 1 500 4 0 1 600 4 0 1 800 6"
#resolution
GRUB_GFXMODE=640x480

Grub-customizer

Grub-customizer has advanced functions to configure the startup menu.

sudo add-apt-repository ppa:danielrichter2007/grub-customizer
sudo apt-get update
sudo apt-get install grub-customizer
sudo ppa-purge ppa:danielrichter2007/grub-customizer
grub-customizer

Startup-Manager

sudo apt-get install startupmanager

Go to System -> Administration -> Startup-Manager