hello, i installed the following three OSes in these partitions. 1. primary partition: WinXP 2. primary partition: WinVista 3. extended partition: ubuntu then, ubuntu installed the GRUB bootloader in the MBR, which i now want to use to select all three OSes. unfortunately it seems that vista also installed a bootloader on the first and second partitions. so when i configure grub to boot from the first partition, then i get to the vistabootloader which lets me select vista or xp and if i boot from the second partition then i get the error: no bootloader found. so, 1. how can i remove the vista bootloader from the first partition and directly boot xp? 2. how can i modify the second partition so that it directly boots vista? thanks!