OK - so Partedmagic is now $11 for the latest version - which also comes ready to PXE - no scripts etc required to get ready
Add files to TFTP share - add menu item - done.
menu item =
kernel http://${fog-ip}/pmagic/bzImage64
initrd http://${fog-ip}/pmagic/initrd.img
initrd http://${fog-ip}/pmagic/files.cgz
initrd http://${fog-ip}/pmagic/fu.img
initrd http://${fog-ip}/pmagic/m64.img
imgargs bzImage64 boot=live ip=dhcp edd=on noapic load_ramdisk=1 prompt_ramdisk=0 rw vga=normal sleep=0 loglevel=0 keymap=us splash quiet - || read void
boot || read void
Worked first time 