Linux Mint Forums

They will share your existing swap partition. After installing Ubuntu, we can fix it so that Mint grub will be used, but it can be intimidating for new users because you will have to manually add the Ubuntu 8.04 grub entry manually to Mint's grub menu. Post the output of these two commands, and I will help get you started. Just run each command one at a time from a terminal.
This will give you a value such as (hd0,1), or (hd0,2). This is where grub is installed now(Mint). After you install Ubuntu, you will have to change it back. Now post the output of
After you post what these commands tell you, I will finish telling you how to make this work.

That muddies the water a little If it were me, I would install 8.04, but before you start the final steps there should be an advanced tab where you can tell Ubuntu not to install it's version of grub. That way Mint's grub will stay intact, and you can just manually edit Mint's grub menu , and add the grub menu entry for 8.04. The easiest way would be to boot back into Mint after installing 8.04, mount 8.04 , and then copy and paste the 8.04 grub menu entries into Mint's. You will want the top two lines like this:
Don't use mine Your root and UUID will be different.