iSCSI and Windows 8 changes
It appears Windows 8 has removed the CriticalDeviceDatabase key. Or, it looks like it just moved it to HKLM\System\ControlSet001\Control\DeviceLocations. Under the old CDD key there was thousands of listings of hardware ID's that were useless. It appears they just eliminated them and then renamed CDD to DeviceLocations.
There you go.