When Ubuntu changed to Grub 2 a couple of releases ago, it became significantly more difficult to set up multi-boot Linux systems. Most if not all Ubuntu derivatives are also using Grub2, and now the ...
I think from my recollection you can use the Redhat and/or Fedora CD#1 to boot into rescue mode then follow directions from there.... Basically once you boot into rescue mode, you would have to mount ...