How to add GRUB?

I've just installed Kubuntu, now i added other HD with Windows and i need GRUB to be able to select between the two O.S. What's the easiest to do it? thanks!

 

sudo update-grub (or perhaps sudo update-grub2)

 

Already done, i used grub4dos from Puppy Linux.

Anyway, thanks for answering wilbertnl

 

sorry for delay post

as you already done it so now backup your (ie copy paste) your /boot/grub/grub.cfg

grub.cfg file i mean

https://help.ubuntu.com/community/Grub2

also second help is install Boot-Repair it give you gui way see above one also many others way like you did from one )

 

here full tutorial

http://www.dedoimedo.com/computers/grub-2.html

 

Thanks a lot!