There has been mention of this before but I'm not sure it was resolved,

I downloded & burned Stallion2.iso which worked great in a p4 2.4 a p3 733 an 800 laptop (a Samsung that a few years old) Vmware and Qemu.

As this is 99% perfict for what We want I attempted to demonstrate it / pass it on to various people.

Since then we've tried it on another 7 or so machines most of which dont boot claiming there to be no bootable os on the CD.
These vary in age from p 450 to 3Ghz (all intell processor) and all on a CD I tested first and have just booted from now..

Most of these machines have been booted off Linux CD's recently as we use Novells Zen works to install the workstations
(it uses Linux to Image the hard disk)

So basicly I cant think of a common factor as to why some work and others dont.
If anyone has any thoughts let me know and I'll get some one to give it a try...