Hi I have exactly the same problem (described at http://lists.debian.org/debian-boot/2004/12/msg00501.html: SATA disk not found with rc1 or kernel 2.4, CD-ROM not found with rc2 and kernel 2.6 ; in my case ethernet was never recognized), but in my case the deactivation of AHCI does not help. I use Linux 2.6.8.1, have an Intel D925XCV motherboard. Thanks for help Jocelyn