Yes I followed that guide and found that using virt-install was unsucessful due to the centos installer (on the guest) being unable to detect /dev/xvda.
So I then proceeded to create a custom config following: http://wiki.centos.org/HowTos/Xen/InstallingCentOSDomU
I am using centos 5.4 on the host and centos 5.4 installer on the guest.
I have then tried to boot using /dev/sda using the following xen config and ks-minimal.cfg config.
kernel = "/var/www/html/centos54/os/images/xen/vmlinuz"
ramdisk = "/var/www/html/centos54/os/images/xen/initrd.img"
name = "www2-test"
extra = "text ks=http://220.127.116.11/centos54/minimal-ks.cfg"
memory = 2048
disk = [ "tap:aio:/vms/www2/disk01-test.img,sda,w" ]
vif = [ "mac=00:16:36:4f:3b:3d,bridge=xenbr1,script=vif-bridge" ]
vcpus = 8
#bootloader = "/usr/bin/pygrub"
on_reboot = "destroy"
on_crash = "destroy"
contents of http://IP-Of-Webserver/minimal-ks.cfg
url --url http://IP-Of-Webserver/centos54/os/
CentOS-5.4-x86_64-bin-DVD.iso is mounted to /var/www/html/centos54/os and is publicly accessible.
The kernal and ramdisk are used directly from the mounted ISO.
Using /dev/sda and following the prompts gets the installer to:
+------------+ No Drives Found +-------------+
| An error has occurred - no valid devices |
| were found on which to create new file |
| systems. Please check your hardware for |
| the cause of this problem.
Where-as /dev/xvda brings back a similar error of:
Input/output error during read on /dev/xvda
I have spent close to 16 hours googling, trying new things and running around after guide after guide. If you could shead some light that would be amazing!