How to install gpxe/etherboot to hard disk

I have an old PC that I'd like to use as an LTSP client, but its BIOS cannot boot from the network... I tried booting from a CDROM containing a gxpe (Etherboot) image downloaded from ROM-o-matic and it works, so my question is: how do I install the image directly to the local hard disk?

From serverfault Joril

• Found a way:

  1. Boot from a liveCD
  2. Download USB image from ROM-o-matic
  3. dd if=gpxe-1.0.1-gpxe.usb of=/dev/hda
  From Joril