/boot/messages in Red Hat?

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http://unix.stackexchange.com – I'm reading a SUSE Linux tutorial for creating a custom installation CD from host's kernel. As first step it indicates to create a iso/boot/grub folder system and perform the files copying indicated below: cp /boot/vmlinuz boot/ cp /boot/initrd boot/ cp /boot/message boot/ cp /usr/lib/grub/stage2_eltorito boot/grub cp /boot/grub/menu.lst boot/grub So, for stage2_eltorito, it must be copied from /usr/share/grub/x86_64-redhat. But what about /boot/message? I used locate but got not results. And, what is this needed for so far? (HowTos)