How to get raid back after asus sabertooth motherboard update?

i did a bios update and now it won't boot anymore as it sees only one member disc from the 2 discs in raid 0.
this after i updated succesfully my bios (as i can see the new bios version and it said so after it was finished updating)
it tells me to change my settings to where they where before the update.
so how to set it back in raid 0 so he will see both mmber discs?
thanks for helping me