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Cannot boot using Grub from CD

I am trying to make a CDROM Grub boot disc so that I can boot my system if the MBR is overwritten or the default partition is removed.

I made an eltorito CD with stage2_eltorito and my menu.lst file in the CD's /boot/grub using the instructions in the manual at http://www.gnu.org/software/grub/manual/html_node/Making-a-GRUB-bootable-CD_002dROM.html#Making-a-GRUB-bootable-CD_002dROM

The CD boots and the blue menu is displayed, but none of the menu items will boot anything. These are the messages on the screen:

   Booting 'Debian GNU/Linux, kernel 2.6.18-3-686'

   root  (hd0,5)
   Filesystem type is extfs, partition type 0x83
   kernel  /boot/vmlinuz-2.6.18-3-686 root=/dev/hda6 ro
      [Linux-bzImage, setup=0x1e00, size=0x131990]
   initrd  /boot/initrd.img-2.6.18-3-686
      [Linux-initrd @ 0xfb37000, 0x4a8421 bytes]

   Error 15: File not found

   Press any key to continue...

Pressing a key returns me to the menu. Trying again always results in

   Booting 'Debian GNU/Linux, kernel 2.6.18-3-686'

   Error 25: Disk read error

   Press any key to continue...

Can anyone please suggest why Grub does not boot the system?


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