booting 8.04 and 10.04 witch grub to use

[klein de usa]

hi
i have 8.04 installed on two computers i would like to also install 10.04 on the same computers. my question is if i install 10.04 and let grub 2 handle the boot for 10.04 and 8.04, when the kernel updates in 8.04 how do i update this in 10.04 grub2? before when i had to do this i would just edit the grub menu list of the old style grub, after doing much reading i don't think it is that easy. would running update grub from 10.04 pick up the change in the 8.04 kernel?

[confused57]

hi
i have 8.04 installed on two computers i would like to also install 10.04 on the same computers. my question is if i install 10.04 and let grub 2 handle the boot for 10.04 and 8.04, when the kernel updates in 8.04 how do i update this in 10.04 grub2? before when i had to do this i would just edit the grub menu list of the old style grub, after doing much reading i don't think it is that easy. would running update grub from 10.04 pick up the change in the 8.04 kernel?

I would recommend allowing 10.04 to install grub2 to your first boot drive's mbr, probably /dev/sda? Then when Hardy has a kernel update, just boot into Lucid & run:

sudo update-grub

I'm much more familiar with legacy-grub, but I've found that it's easier to let 10.04 manage the booting of other OS.