### grub2
/etc/grub.d/40_custom
menuentry "OpenBSD" {
	set root=(hd0,1)
	chainloader +1
}
$ update-grub # under debian
	
	# set default http://wiki.debian.org/GrubReboot
/etc/default/grub: 	GRUB_DEFAULT=saved
update-grub
grub-set-default 'Fedora Linux, with Linux 3.1.2-1.fc16.x86_64'
grub-editenv list
update-grub

### windows
use easybcd (add an entry Linux)
http://www.supergrubdisk.org/wiki/Howto_Boot_Grub_from_windows#Windows_Vista_.28with_easybcd_help.29