After Ubuntu 9.04 installed,it stay in seconds and go into Ubuntu directly without booting menu when my computer restart.I have to press Esc key during the suspended time and select OS in grub menu whenever I do not want to boot up Ubuntu.In this tutorial I will explain how to make grub loading grub menu without press Esc and booting up a default OS with timeout.
First,in ubuntu system open up a terminal window and execute:
sudo gedit /boot/grub/menu.lst
At the file window,add “#”at the begin of line “default 0″,”timeout 5″,”hiddenmenu”,following is what I have done.
then at the top of boot menu add tow lines
default 0 timeout=5
close and save the file.