Okay, FWB 2.0.6 will not work with ATTO firmware greater than version 1.1.1. So, for those drives to mount, you'll need to update the drivers to FWB 3.0.2. I'm not sure why the version 3.0 drives won't mount, but likely it's because they're on the same bus as the 2.0.6 drives and the whole bus is hanging. Another option is to power the drives down then boot the system -- then power the drives on and mount them. Also, you can do the above steps, place the ATTO ExpressPro-Tools extension in the extensions folder, launch ExpressPro-Tools 2.3.2, and use the Inhibit Driver Loading command to force the drives to run from the ATTO extension, as opposed to the FWB drivers. Just double click on a drive in the left-hand pain in the main window of EPT. You'll see a check box called Inhibit Driver Loading. Check it, then click on Apply To All to set it for all IDs on that channel (repeat for the other channel, if necessary). Quit EPT, follow the prompts and reboot. Let me know if this helps. ------------------ --Steve Rosenthal, Digidesign ETS