hi i first had windows xp, with fdisr. i then installed kubuntu. when i booted into windows, i noticed the pre boot of fdisr was no longer there. so i re-enabled the pre boot in the fdisr gui. when i rebooted, grub was no longer there. i only had the fdisr pre boot. i can no longer boot into linux. any ideas on what i should do? im just a newbie to linux. both os resided in the same hard drive. thanks.