[gentoo-user] PS/2->USB-Keyboard and the BIOS

Hi,

I have a problem here...(as you may have already guessed...;)

I have an old PS/2 keyboard, which I do love a lot. This PS/2-
keyboard is connected via a Chesen Electronics Corp. PS/2 Keyboard+Mouse Adapter
to an USB-port of my ASUS Corsshair IV formula board.

When Linux is running I have not a single problem with this setup...
BUT entering the bootselector via F8 while BIOS is coming up is
to 99% impossible. I managed that only once.
On the other hand: Entering BIOS with F1 is not simple and often
requires several boots, but it is possible.

What can I do to make F8/the bootselector work?

Thank you very much for any help in advance!
Have a nice weekend!
Best regards,
mcc