Well this board comes with two independent onboard SATA controllers:
- Intel Matrix
You can access Intel Matrix thru Ctrl + I.
You can access Marvell thru Ctrl + M. This can be enabled in the BIOS by enabling the Secondary SATA controller from Peripheral Configuration.
The 3 blue SATA ports are for Marvell Controller.
The 4 black SATA ports are for Intel Matrix Controller.
You cannot mix them together.
The red SATA port is for e-SATA HDD.
On Intel Matrix there is an option to reset the hard drives to NON-RAID.
So connect the drives that had a raid configuration before, to the black sata ports and go into the Ctrl + I , then reset them to non-raid.
Before that make sure that the SATA controller is configured as RAID. If you want, you can disable the marvell controller as a precaution, this will be disable the Ctrl + M option.
Once you have done that, you will now have your hard drives reset to NON-RAID and all the data should be gone by now.
You need to know how many raid array you want to have.
Max number of drives on the Marvell controller will be 3 drives, so you can have raid 0,1, 5.
Max number of drives on the Intel Matrix controller will be 4 drives, so you can have raid 0,1, 5, 10.
Plan your raid configuration and re-create your new array and install your OS.
This may help you a bit to understand them better.
All the best,