Xen 3.1 Windows XP VM install on CentOS 5.0

Perform HVM Windows XP VM install utilizing ISO image of distribution CD
already copied by "dd" to SATA hard drive.
Set boot="d" in VM's profile (windows.hvm) and proceed:-

# /usr/sbin/xm create windows.hvm
# vncviewer localhost::5901
  

Another option to build HVM VM utilizing block oriented device:-

Now set boot="c" and proceed:-

# /usr/sbin/xm create windows.hvm
# vncviewer localhost::5901
  

# /usr/sbin/xm create windows.hvm
# vncviewer localhost::5901
  

Partitions /dev/sda8 and /dev/sda9 have been used to store Windows XP VMs:-