How to change boot sequence -Grub2 in feora 17

How to change boot sequence -Grub2 in feora 17

Works with Fedora 17

This is for dual boot os users, there are many who prefers dual boot to keep another OS optional. For any reason if you wish to change boot sequence unlike grub, grub2 requires couple of commands to run.

Here will take example to keep Windows as default boot.
First of all find menuentry for Windows

cat /boot/grub2/grub.cfg |grep Windows

result:-

menuentry 'Windows Recovery Environment (loader) (on /dev/sda1)' --class windows --class os $menuentry_id_option 'osprober-chain-A4D6D327D6D2F90E' {
menuentry 'Windows 7 (loader) (on /dev/sda2)' --class windows --class os $menuentry_id_option 'osprober-chain-3AC0F2D0C0F2917D' {

Set Windows menuentry as default (only entry mentioned in either " or ' from above command)

grub2-set-default "Windows 7 (loader) (on /dev/sda2)"

Verify default entry

grub2-editenv list

Generate updated grub.cfg

grub2-mkconfig -o /boot/grub2/grub.cfg

Below is to set Fedora as default boot

cat /boot/grub2/grub.cfg |grep Fedora
grub2-set-default "Fedora Linux, with Linux 3.1.0-5.fc16.i686"
grub2-editenv list
grub2-mkconfig -o /boot/grub2/grub.cfg