2.4.20-pre{2-4} boot problems

When booting any of the above (including -ac), I get the following message, 2.4.20-pre1-ac1 is what is currently running fine and the only pre1 kernel I've tried. I have reiserfs compiled in, same .config for all kernels.

Freeing initrd memory: 466K freed
VFS: Mounted root (ext2 filesystem) kmod failed to exec /sbin/modprobe -s -k block-major-3, errno = 2
VFS Cannot open root device "306" or 03:06
Please append a correct "root=" boot option

Kernel panic. VFS: Unable to mount rootfs on 03:06
----------------------------------------------------
	I have checked the Changelog and I'm at or above the recommended

levels. I've tried bot gcc-2.95.3 and gcc-3.0.4 with same results.
------------------------------------------------------------------

barrabas:/home/lancelot # uname -r;mount 2.4.20-pre1-ac1
/dev/hda6 on / type reiserfs (rw)
proc on /proc type proc (rw)
devpts on /dev/pts type devpts (rw,mode=0620,gid=5) /dev/hda1 on /boot type ext2 (rw)
/dev/hdc1 on /usr1 type reiserfs (rw)
/dev/sda1 on /data1 type reiserfs (rw)
usbdevfs on /proc/bus/usb type usbdevfs (rw,devmode=0666) shmfs on /dev/shm type shm (rw)
===================================================================
mount: mount-2.11n

Regards

Sid Boyce ... hamradio G3VBV ... Cessna/Warrior Pilot
Linux only shop