Boot failed? That's pretty concise. :/ Well, my guess would be either something went wrong with the rawrite process - though then I'd figure you'd get a non-system disk error - or it's just not the right disk. Is there anything special about your system?
I'm not much good for this, because I've got very conventional boxes for the most part and the basic boot stuff usually works - more or less. I thought it was just that you didn't have a bootable CD-ROM.