SATA disks, Debian with 2.4, 2.6 kernels

I was installing a Dell 750 host, which has SATA disks. Using the 2.4.27 kernel with FAI, the disk is seen as /dev/hdc, however when switching to a 2.6 kernel this becomes a SCSI disk as /dev/sda. Update your /etc/fstab and your lilo/grub root device configuration.