I installed Bianca lite by resizing an xp partition and am now dual booting. This is a dual core machine - two drives show up on the install partitioner. Fedora Moonshine is installed on the second core/drive. Its partition shows up as an unknown black area in the partitioner. Both OS use grub. How can I provide previously installed Moonshine (or any other OS) on the grub boot list that the new Bianca install has left me with, so that I can use any one of them?