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#480
You would need to look in the bios settings for hard drives. The option for Raid as well as ide mode and AHCI would be found in the Integrated Periperals section.
As for your finding on drivers there that shows you have the necessary drivers already installed. That should out the need for any worry about getting drivers on when switching modes.
Here the board came already set to the AHCI mode from the factory but 7 was dragging. I then switched it to the Native ide mode until lately seeing the clean install go on.
The initial install however was to one of the sata 3 not sata II drives when getting the case together. Apparently the S3 controller is a bit more fussy.