Install guide outdated about Old World disk booting ?

[Noé Falzon <noe.falzon@tiscali.fr>]

I recently tried to install Sarge on my Performa 6400, and I followed  
the instructions given in the latest install guide. But on section  
4.5.1, here :
http://www.debian.org/releases/stable/powerpc/ch04s05.html.en
they ask to use a Kernel and RamDisk from the Woody release. And  
indeed, when the install is complete, Debian 3.0 is installed, andthe  
Kernel is 2.2.

So I tried to get the files myself from the Sarge distfiles located  
here :
debian/dists/sarge/main/installer-powerpc/current/images/powerpc/ 
netboot/
I used the vmlinux kernel, and initrd.gz ramdisk. Everything went  
right during the install.
But when I rebooted into the newly installed system, a kernel panic  
occured saying that it couldn't load the root partition. I double  
checked the names of partitions and the partionning stage, and it  
should be ok.

Does anyone know if the guide will be updated, and/or how to solve my  
boot problem ?

Thanks a lot,
N. Falzon