Download the AMD Raid Driver Package (48.9 MB, Rev.13.9)
http://support.amd.com/en-us/download/chipset?os=Windows+8+-+32
Acquire a USB 2.0 Flash Drive
Click on the AMD Raid Driver file and it will ask where to install it. Select the USB Flash Drive. and the files and folders will extract to the flash drive. Cancel the Catalyst Install Manager if it pops-up.
Connect the two RAID drives to the first two SATA 6Gb/s ports.. The SATA Configuration is set to RAID. You should be able to connect a DVD-Rom to ports 5 or 6 and use IDE mode on those two ports.
On start-up press the Cntrl and F keys during POST to bring up the RAID Configuration Utility. Create the RAID 0 array and format it. Set the BOOT Order Priority to boot from the DVD-Rom First.
Insert the Windows install DVD in the DVD-Rom and restart the system.When Windows installation starts you have an opportunity to add the RAID driver. It asks you for the folder with the driver. The setup will show it as the AMD AHCI Compatible RAID Driver. Select the RAID array as where to install Windows. After the installation of Windows completes set the Boot Priority back to Hard Drives.
Look thru the folders on the Flash Drive for SB8XX Raid and select the operating system folder you chose to use. That is the correct folder for the RAID driver you will need. The SB8XX is short for Southbridge 850 which is the same hardware as the Southbridge 970.