I have been fighting this exact problem for a long time. As of yet I am also unable to make this driver work. I have tried making a CD where this was the only driver added to txtsetup.sif and it still just does not recongnize the hard drives. Using the exact same drivers from a standard oem cd and hitting F6 works perfectly. Using a utility to check the hardware ID of the controller and comparing it to the hardware IDs added to txtsetup.sif checked out and appears correct. I just cannot figure out why this particular driver will not work.