SuSE 9.1 installation on Adaptec Raid with dtp_i2o driver

I boot to SuSE install dvd and start a manual install. Yast finds my adaptec(dtp) 2000 raid card and ask to load the dpt_i20 drivers, I say OK. Yast continues but says it can find any hard disks. I know hards are installed, because I have formated them up, install SuSE 9.0, then reformated. This same process works OK with SuSE 9.0 installation. I have tried just installing to a single disk, or a raid setup, but the intallation never finds any disks. Can anyone give me an idea where to look next?.....joe