ubuntu 5.04 ppc kernel recompilation

[chkdsk]

Hi all,

I am trying to recompile my kernel on kubuntu 5.04 on a mac mini.

The steps I made are:

1) make config
2) make bzImage
3) make modules
4) make modules_install
5) cp vmlinux.coff in /boot
5) yaboot.conf modification & ybin -v

I got a vmlinux.coff file which I'm said "not a valid ELF image" during boot.

What did I do wrong?

Thanks in advance...