[arch-ports] archlinux-ppc on my mini-ppc

hi, I try to install archlinux-ppc on my mini-ppc /dev/hda4 (with iso 28/8/2006) I have kubuntu already running on /dev/hda3 OK I have this yaboot.conf: boot=/dev/hda2 device=/pci@f4000000/ata-6@d/disk@0: partition=3 root=/dev/hda3 timeout=50 install=/usr/lib/yaboot/yaboot magicboot=/usr/lib/yaboot/ofboot enablecdboot enableofboot image=/boot/vmlinux label=Linux read-only initrd=/boot/initrd.img image=hd:4,/boot/vmlinux26 label=arch root=/dev/hda4 partition=4 initrd=/boot/kernel26.img read-only but arch load kernel and then have kernel-panic...... fstab seems OK can you help me ? thankyou