Chainloading to an isofile embedded bootloader

[Arbiel (gmx)]

Hi

Using grub2, booting a PC from an iso file is rather straightforward 
when the file's bootloader is grub2 itself or that the 
/boot/grub/loopback.cfg file exists.
When this is not the case, one has to write such a 
/boot/grub/loopback.cfg file, and this may require a lot of expertise. A 
way to avoid this rather cumbersome task would be to have grub2 
chainload to the loopbacked file-embedded bootloader.

1) does such a chainload operation work ?
2) in the case it works, can you please inform me which block address 
and length are to be used ?
3) else, would it be possible to include this development into grub's 
future plans ?

Thanks

Arbiel