I already have a dual boot system with a grub boot loader.
I want to install a windowsxp os.
How do I modify grub boot loader after installing windows xp in a partition.... So that grub includes options to boot from all 3 os.
Ubuntu - /Dev/sda7 Windows7 /Dev/sda2
Also when I checked Gparted I saw that there is /Dev/sda4 "extended" that is the sum of /dev/sda5 /dev/sda6 and /dev/sda7. Is there any concern?