Re: Dual Booting 8.10 and 8.04
I always use the manual installation method. You have complete control that way.
As a side note, just before final install, click on advanced options and uncheck the box for installing GRUB. Otherwise, you will overwrite your existing GRUB. Sometimes that is not a problem and the new GRUB will find your other operating systems and install them. But I have had it to create problems before. I prefer to keep the existing GRUB and add the new installation to the existing menu.lst file.
Break it, fix it, learn something.
People who never make mistakes seldom make anything!