As a side note:
The image type description in the wiki (I got there from the balloon help: https://wiki.fogproject.org/wiki/index.php?title=Managing_FOG#Images) points to a non-existing page (404): https://docs.fogproject.org/en/latest/management/image-management.html

Thanks! @JJ-Fullmer would you find the time to fix that quickly?

Fixed!
@medchemii thanks for letting us know. We changed the structure of the new docs page a bit and it affected the links. We’re working on getting redirection working for old links still

Hi all

@thomGee said:

But if someone has an idea, I‘d be thankfull too!

We encountered exactly the same issue at my place of work. A colleague of mine found out that local boot works with GRUB Version 2.06-13 as supplied by Debian “bookworm”. We were able to insert those packages into our Ubuntu. So far, it works without issues. 🙂

Hope this helps
Hermann