Adding a RAID array in windows 8 causes boot loop

MB: ASRock Z87M Extreme4
SSD: Samsung 840 Pro 256GB
HDD: WD 1TB Black (x2)

I installed the OS on the SSD.
I would like to create a RAID 1 mirror using the other 2 disks for storage.
When i go into the BIOS to change the SATA type from AHCI to RAID, it causes a boot loop.
All 3 drives are plugged into the SATA connections on the MB

Am i doing something wrong?

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Please look at your manual for setting up RAID at:
From what i see, you need to create RAID at boot with the Intel RAID BIOS by using "CTRL I" or go into the UEIF Setup utility.  Since it is looping I would try the Intel, Wait
until you see the RAID software prompting you to press
Based on your description the MotherBoard you use does not have the per sata port configuration option. where you can specify SATA 1 is AHCI and the other two are RAID.

In your case, you would change SATA to AHCI. and then setup RAID functionality within the windows 8 using the two other drives as dynamic establishing a RAID within the OS.

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gdinunzioAuthor Commented:
After changing the SATA type to RAID, the Intel configuration screen does show up on boot up.  It also allows you to choose what  drives you want to include in the RAID array, so i would assume that it does have port configuration.

Isn't there somewhere in the OS to change the disk type?  I know i have done this before but that was from RAID to non RAID for an SSD.
Before going this route, make sure that motherboard supports RAID configuration with a single independent drive
i.e. boot SSD, and then the RAID volume of the other two disks.

You may have to go through the registry enabling the RAID driver.

But in your case you need to know which driver is needed for the RAID controller of your motherboard and add/install it and enable it before the switch.
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