own Kernel - ram disk problem

Hello!
I build myself a new kernel, and then bootet the disk, but i got a
"Could not find a valid Ram disk image starting at 867" ...
I read in the archive that someone just renamed its bzImage kernel to
bz2bzImage, SO DID I!
ok, then i deleted the old kernel, copied mine on it and changed 

settings.s:
==============
KERNEL=bz2bzImage --> KERNEL=bzImage



build.s:
=================
if [ $KERNEL = "bz2bzImage" ]
then
 dd -q --retry-partial if=$RD bs=1k count=$RZ|bzip2 -9>$ID/root.raw.xz
else
 dd -q --retry-partial if=$RD bs=1k count=$RZ|gzip -9>$ID/root.raw.xz
fi

-->

if [ $KERNEL = "bzImage" ]
then
 dd -q --retry-partial if=$RD bs=1k count=$RZ|gzip -9>$ID/root.raw.xz
fi

-------

image=$MP/bz2bzImage --> image=$MP/bzImage



umounted tomsrtbt.raw again, wrote disk. booted, stillt the same error.
I have minix and ramdisk support in my kernel (2.4.20). 

What did i do wrong? 

Cheers, Mario