I install Fedora after installing XP.. During fedora-10 installation i give XP as default boot. then after installing fedora XP shows "Disk boot failure, Insert system disk and press enter " this error. but fedora boots normally.. by giving the command FIXMBR XP boots normally then fedora will not boot.when i give grub-install /dev/sda from fedora Disc then fedora boots normally but XP cannot boot.Please help me for using both OS normally.