ipxe boot ccboot

[robinsmidsrod]

We need more details on exactly how you're booting ccboot (which you also need to tell us what is, links etc.). Most ISOs are not designed to be netbooted over PXE directly, so you probably need to get the kernel+ramdisk/initrd out of it and boot it manually (if it is linux or another unix variant). If you're using gpxe, then the first step is to upgrade to ipxe (which is a few years newer).