I am trying to set up a multiple boot system. I have a 250GB hard disk. I wanted to set it up with approx 100GB Ubuntu partition, 25GB vista, 25GB XP and then 100GB shared storage. When I went to format the 100GB shared storage(in gparted) I got a message saying that I had too many primary partitions. Is it possible to create the setup I described? If yes how? If not are there any recommendations?