http://www.kano.org.uk/projects/pxe/
http://howto.basjes.nl/linux/installing-fedora-linux-via-pxe-x86-64
http://www.syslinux.org/wiki/index.php/PXELINUX
http://www.techienote.com/2011/12/how-to-pxeboot-clonezilla.html
http://www.etherboot.org/wiki/pxechaining