MSI X48 Platinum Series Manual page 118

Intel SATA RAID
(3) Select Member Hard Drive(s)
Then select the member disk (the target disk) that you wish to use and then click "-
-->" to move it to the Selected field. Then click Next to continue.
Please note that the existing data on the selected hard drive(s) will be deleted
permanently. Do not forget to back up all the important data before continuing.
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