Building RHEL with Kickstart Files

How to build RHEL 6 on an HP Server from DVD installation with a kickstart file on a USB key:

Assume machine has already been hardware mirrored.
USB sticks are enumerated as sda so kickstart file has to use sdb for internal disk.
Those dodgy Dektek sticks enumerate as 2 drives (sda & sdb) so use sdc for internal disk which is why example below uses sdc.

Boot machine of DVD, highlight first install / upgrade option and press tab to edit. Add this to end of line:

ks=hd:sda1:/kickstart-file.cfg

Sample kickstart here, based on an autogen'ed basic server  install. Bit's I modified are in red.

# Kickstart file automatically generated by anaconda.
#version=DEVEL
install
cdrom
lang en_GB.UTF-8
keyboard uk
network --onboot no --device eth0 --noipv4 --noipv6
network --onboot no --device eth1 --noipv4 --noipv6
network --onboot no --device eth2 --noipv4 --noipv6
network --onboot no --device eth3 --noipv4 --noipv6
network --onboot yes --device eth4 --bootproto static --ip 10.182.46.6 --netmask 255.255.255.0 --gateway 10.182.46.252 --noipv6 --hostname know-msvarnish-01.knon.dtv
network --onboot no --device eth5 --noipv4 --noipv6
rootpw  --iscrypted $6$woBbCXzYdNZUmerV$mz9mELXXNXBLL.k5MpL1S7nn7c3Dlf9i7sWUTRX7W2D0qjQY6sFBrSJA.wi2EfbL.YYz.gGf8AcwwOPEUuYgw1
firewall --service=ssh
authconfig --enableshadow --passalgo=sha512
selinux --enforcing
timezone --utc Europe/London
bootloader --location=mbr --driveorder=sdc --append=" rhgb crashkernel=auto quiet"
# The following is the partition information you requested
# Note that any partitions you deleted are not expressed
# here so unless you clear all partitions first, this is
# not guaranteed to work
ignoredisk --drives=sda,sdb
clearpart --all --initlabel --drives=sdc
part /boot --fstype=ext4 --size=500 --ondisk=sdc
part pv.008002 --grow --size=1 --ondisk=sdc
volgroup vg_knowmsvarn --pesize=4096 pv.008002
logvol /var --fstype=ext4 --name=lv_var --vgname=vg_knowmsvarn --size=51200
logvol swap --name=lv_swap --vgname=vg_knowmsvarn --size=34288
logvol / --fstype=ext4 --name=lv_root --vgname=vg_knowmsvarn --size=100 --grow 

#repo --name="Red Hat Enterprise Linux"  --baseurl=cdrom:sr0 --cost=100 

%packages
@base
@client-mgmt-tools
@console-internet
@core
@debugging
@directory-client
@hardware-monitoring
@java-platform
@large-systems
@network-file-system-client
@performance
@perl-runtime
@server-platform
@server-policy
pax
python-dmidecode
oddjob
sgpio
certmonger
pam_krb5
krb5-workstation
perl-DBD-SQLite
%end

Need to set the language to UK.
The --initlabel to clearpart should stop it asking for confirmation of initialising a new disk
The ignoredisk param tells installer to ignore usb sticks during partitioning
Make sure the --ondisk, --drives, --driveorder all match up with the enumeration of the internal disk
The --grow option tells that logvol to fill the rest of the disk.
Comment out the repo line as it defaults to DVD and didn't seem to work with it in.