Problem on load the Example OS code using grub

[Qiling Liu]

Hi:
   After I compiled the Example OS code from
grub/docs, I copy the file (named "kernel") to a DOS
formats diskette, then I using grub (installed on my
hard disk's MBR and have a menu list). I use the
grub's command line environment, like this:
   grub> root (fd0)
   grub> kernel (fd0)/kernel
  [Multiboot-kludge, loadaddr=0x100000,
text-and-data=0x628
  Error 13: Invalid or unsupported executable format.
  
  I also try to add a "--type=multiboot" argument, but
it get the same result.I don't know why and how can I
do?
  By the way, I use grub 0.5.96.1, and I compiled the
Example OS code under RedHat Gnu/Linux 6.2. My gcc
version is 2.91.xx.
  Thanks!

Regards,
Chiilirng Liour

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