I am running F10KDE, and I got fed up with K3b. I am dual-booting with WinVista. I want to upgrade to F11KDE, and keep Vista, too. So, I went to Vista and ran Roxio to make a bootable iso image of the F11 file. Success. Went to boot with the DVD I had just created as a supposed bootable DVD, and got a message: "Missing operating system." What did I do wrong, and how do I get it to work, please.