Create the RAID driver by unzipping this file to a USB memory stick.
Set the SATA interface to RAID instead of AHCI in the BIOS.
Enter Intel RAID setup (pressing Ctrl-I) to create a RAID-1 array.
Boot Windows 7 DVD
The installer will list both hard drives for partitioning. At this point, load the Intel RAID driver from the USB media stick.
After the RAID driver is loaded, the installer now lists one drive only. This is the RAID array.
Install Windows 7 to the RAID array
Install drivers and management software from motherboard CD
ASUS Probe II Sense Driver
Intel Chipset Driver
Realtek Audio Driver - skipping system restart
Intel Graphic Accelerator - skipping system restart
Intel LAN Driver
Intel USB 3.0 Driver
Management Engine Interface - restart the system
Intel Rapid Storage Technology Driver Software
This tool allows users to manage the RAID array.
Run the Intel Rapid Storage Technology Driver Software