Merci @acris
Super tuto, je suis arrivé a ce que je voulais

@voljega Great discover ! That's also a nice way to explain the meaning of parent/clone roms :)

@acris merxit

Yes, it was simply bad luck and using clones that weren't compatible with the bios. I tried so many clones that I though that I was doing something wrong. I found another clone and worked perfectly. Thanks