@ deadwood
On AROS x86 I happened a few times to access "Early Startup Menu", I don't remember if with the two pressed Mouse keys or if from the Spacebar.
It seems to be not easy to access Early Startup Menu, to my important for maintenance, I also noticed that the Early Startup Menu GUI is outdated and the cursor moves by itself, basically you can't boot the system "without startup-sequence" as you can do AROS 68k.
It would be nice to have on AROS x86 the new "Early Startup Menu" GUI that you created on AROS 68k !