How to PXE Booting a 4G LiveCD?

[MikeyCarter]

I have a cobbler server running with network installs of Fedora 7 - 10, CentOS 4 - 5 and Ubuntu series. Ubuntu is the only one I have a successful "try before you buy" scenario. Mostly because their LiveCD has features for doing a nfs mount of the root file system.

I know there is a livecd-iso-to-pxe utility but a 4G disk image is way to big to be loading into memory.

So I figure what I need to do here is build my custom LiveCD then modify the initrd to include options for nfs mounting the root FS. That way it pulls the root FS on-demand.

So my question.... how do I do it? It's taken me 3 days to get this far. Can anyone point me to a HOWTO document which has the lest amount of modifications to fedora?