kickstart fails on rhel 4.3 complaining it cannot read root label

[Liju Gopinath <lgopinat redhat com>]

Hello,
One of the customers query.
kickstart fails on  rhel 4.3 complaining it cannot read root label.  
This is on a dell 6850.

Attached scsi disk sda at scsi6, channel 2, id 0, lun 0
Loading jbd.ko module
Loading ext3.ko module
Creating root device
mkrootdev: labelKernel panic - not syncing: Attempted to kill init!
/ not found
Mo u [c  (B [?1;6;7l > [?25h [0;37;40m [2J [5;1H Press the spacebar to 
pause...

KEY MAPPING FOR CONSOLE REDIRECTION:

Use the <ESC><0> key sequence for <F10>
Use the <ESC><@> key sequence for <F12>

Use the <ESC><Ctrl><M> key sequence for <Ctrl><M>
Use the <ESC><Ctrl><H> key sequence for <Ctrl><H>
Use the <ESC><Ctrl><I> key sequence for <Ctrl><I>

Kickstart file:
---------------
install
nfs --server 10.252.4.94 --dir /spare/RedHatAS4/
reboot
zerombr yes
lang en_US.UTF-8
langsupport --default=en_US.UTF-8 en_US.UTF-8
keyboard us
# Intentionally configuring eth0 so that install will be non-interactive -CC
#network --device eth0 --onboot no --bootproto dhcp
#network --device eth1 --onboot no --bootproto dhcp
#network --device eth2 --onboot no --bootproto dhcp
#network --device eth3 --onboot no --bootproto dhcp
network --device eth4 --onboot no --bootproto dhcp
#network --device eth5 --onboot no --bootproto dhcp
rootpw --iscrypted $1$UBaqGDAc$Uvm1lPaGmFtcbfdIYD5NI0
firewall --disabled
selinux --disabled
authconfig --enableshadow --enablemd5
timezone Europe/London
bootloader --location=mbr
clearpart --all
part /boot --fstype ext3 --size=200 --asprimary
part /u00 --fstype ext3 --size=40960
part /tmp --fstype ext3 --size=20480
part / --fstype ext3 --size=16384 --asprimary
part /var --fstype ext3 --size=8192
part /opt --fstype ext3 --size=8192
part swap --size=4096 --asprimary
part /spare --fstype ext3 --size=100 --grow

%packages
@ compat-arch-development
@ admin-tools
@ system-tools
@ text-internet
@ dialup
@ compat-arch-support
@ legacy-software-development
@ mail-server
@ server-cfg
@ development-tools
e2fsprogs
kernel-smp-devel
kernel-devel
kernel-smp

%post

Thanks for any update.
Liju