CentOS - Jun 2013 - How to rebuild the Centos 6.4 iso images with the same contents as officially released iso images ?

I have read many Centos webpages and mail archives but found only raw
descriptions of the build process.

My first aim is to rebuild CentOS-6.4-x86_64-LiveCD.iso using the Centos
repositories
and preferably without recompiling the SRPMs, just to verify the build process.

My final aim is to create a Centos LiveOS contain the packages in
CentOS-6.4-x86_64-minimal.iso
plus some network configuration changes and some own executables preinstalled.

--- Only background, not part of the question ---

I tried to build a LiveOS on Centos6.4 x86_64 host using livecd-creator (
livecd-tools-13.4-2.el6.x86_64 ):
LANG=C livecd-creator --config=centos-livecd-minimal.ks ?fslabel=CentOS-minimal

centos-livecd-minimal.ks ( adapted from 
https://projects.centos.org/trac/livecd/browser/trunk/CentOS5/centos-livecd-minimal.ks
) :

lang en_US.UTF-8
keyboard us
timezone US/Eastern
auth --useshadow --enablemd5
selinux --enforcing
firewall --disabled

repo --name=a-base    --baseurl=http://mirror.centos.org/centos/6.4/os/x86_64
repo --name=a-updates
--baseurl=http://mirror.centos.org/centos/6.4/updates/x86_64
#repo --name=a-extras 
--baseurl=http://mirror.centos.org/centos/6.4/extras/x86_64
repo --name=a-live   
--baseurl=http://www.nanotechnologies.qc.ca/propos/linux/centos-live/x86_64/live

%packages
bash
kernel
syslinux
passwd
policycoreutils
chkconfig
authconfig
rootfiles
comps-extras
xkeyboard-config

%end

The generated .iso File fails to boot on a real and on a VirtualBox machine
with a problem in the initial ramdisk :

dracut: Fatal: Don't know how to handle
'root=live:UUID=a68d794a-d777-4e4f-86ba-d2cc50d8fa1e'
dracut: Refusing to continue
Kernel panic ? not syncing : Attempted to kill init

On 18.06.2013 18:39, Martin Robrecht wrote:
> I have read many Centos webpages and mail archives but found only raw
> descriptions of the build process.
> 
> My first aim is to rebuild CentOS-6.4-x86_64-LiveCD.iso using the
> Centos repositories
> and preferably without recompiling the SRPMs, just to verify the build 
> process.
> 
> My final aim is to create a Centos LiveOS contain the packages in
> CentOS-6.4-x86_64-minimal.iso
> plus some network configuration changes and some own executables 
> preinstalled.
> 
> --- Only background, not part of the question ---
> 
> I tried to build a LiveOS on Centos6.4 x86_64 host using
> livecd-creator ( livecd-tools-13.4-2.el6.x86_64 ):
> LANG=C livecd-creator --config=centos-livecd-minimal.ks 
> ?fslabel=CentOS-minimal
You are using the wrong ks, try this:
http://people.centos.org/arrfab/CentOS6/LiveCD-DVD/centos6-liveCD-desktop.cfg

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