iPXE and Reboot Restore RX

Folks - I am using FOG to image our PC's. I have been experimenting with using Reboot Restore Rx
(http://www.horizondatasys.com/en/product...#Features)
as a way to roll back changes made to the PC's (we are a public library).

I cannot seem to get iPXE to chain to the hard drive. RRRx always errors out. It boots just fine when I F12 to the hard disk.

Has anyone ever used this software and made it work with iPXE?

Thanks -

Mark