AmigaOS 4.1 FE classic and dual GFX board configuration (Radeon and Voodoo 3)

[Reflex]

Hello

is it possibile to use both a Voodoo 3 and a Radeon 9250 GFX card on Amiga4000 with AmigaOS 4.1FE?
when i install the OS it only recognizes the Voodoo 3 and when i boot up the Amiga after installation there is no way to add or find the Radeon, what's wrong? I'd like to use the Radeon 9250 on the OS4.1 side while i use the Voodoo3 on AmigaOS 3.2 partition so i want to keep both in the tower.
Any suggestion is welcome

[Reflex]

Yes i have a mediator inside a full tower.
I guessed that the order of the boards could influence the installation process but i was wrong. AmigaOS 4.1FE seems to use the Voodoo3 if present and this is not affected by the order of the boards in the slots.
I made some more tests and unplugged the Voodoo3 leaving the Radeon as the only GFX board on my Amiga 4000, i was able to installa AmigaOS4.1FE but when i plug the Voodoo3 again i only get a black screen and some glitched on the Voodoo3 output.

[Reflex]

unfortunately Hyperion forum is really silent, 430 people read my question but none replied.
What is that editor you are talking about?

[Reflex]

oh yes but you can use it only after installation i guess.
After installation it doesn't detects the second GFX board at all