ok, so as suggested : - I recreated the initrd-2.6.8-1.521custom.img and initrd-2.6.8-1.521.img (which already were in the /boot directory) : it doesn't make any difference. - The same goes for switching root=LABEL=/ to root=/dev/hdg6 (on my disk) : I always get the kernel panic. That said, I understand that you guys are led to believe that the problem is not really a problem of that particular kernel or the Athlon 64 architecture but rather a more general "boot problem". But then, how come I can boot with the kernel 2.6.5-1.358 ? Anyway thank you for the tips : I keep investigating... bye
