How to show grub menu after grub update?

view full story

http://askubuntu.com – I have 11.10 and Windows 7 in dual boot. Today I tried to update grub and I run the following command in terminal: sudo fdisk -l sudo mount /dev/sda6 /mnt sudo grub-install --root-directory=/mnt /dev/sda sudo grub-install After installation and reboot, it does not show the grub menu (from which I can choose which OS to boot) and it directly boots Ubuntu. Please help. (HowTos)