Booting to local partition / Boot grub from Pxe

[TcShadowWalker]

Hey,

I plan to deploy iPxe to my machines.
Since I can't flash it into the NIC, I will boot iPxe from grub, no problem so far.
IPxe fetches a script from the server via https and I got that part working nicely.
However, I will then need to be able to boot from a local partition: I know I can use 'sanboot --no-describe --drive 0x80'. But that just reloads grub from the MBR.
If iPxe is the default entry, this will boot iPxe again and I have a boot-loop.

Is there a way to directly boot a kernel from a local partition? I did not find anything in the command list, so probably not, since Ipxe probably does not understand how to read those filesystems.

Alternatively, is there a way to boot into a grub image on the PXE server?
I tried to generate a grub pxeboot image, using

Code:

grub-mknetdir --net-directory=/tftpboot/ --subdir=grubpxe

And then booting that entry via http with:

Code:

kernel http://.../files/grubpxe/i386-pc/core.0
boot

Grub starts, but reports 'error: file not found' and then goes into a rescue console.
If I could load a grub menu from the server, I will then be able to boot from a local partition.

Any help is appreciated