RAW Read and Write to DISK

[icb]

What's driving your desire for iPXE-only? I would do this by booting into a minimal Linux initrd. Gentoo have a decent guide.

You would give iPXE something like:

Code:

#!ipxe
dhcp
kernel disk-write/kernel
imgfetch disk-write/initrd
imgfetch disk-write/sda.img /sda.img
boot

The image fetched to /sda.img will appear in that location once you've booted.

The /init in your initrd could then be something like:

Code:

#!/bin/busybox sh

dd if=/sda.img of=/dev/sda
echo Completed.
sleep 10
shutdown -r now