Quote Originally Posted by UnderScore
Smart Boot Manager which a program loaded on to a floppy disk.
I agree, if there is nothing wrong with the DVD then you may resolve the issue with SBM. But it doesn't have to be loaded on a floppy, I have it loader on the MBR and use it to boot an OS from the hard disk or from an optical disk. When you do this with an installed Linux you install SBM to the MBR and the Linux bot loader (normally lilo or grub) to the Linux partition.

Another even nicer tool is XOSL. It used SBM code to do the optical disk boots, but has a much nicer looking user interface and is a lot more powerful, worth the few minutes it takes to set it up.