ASROCK 4CoreDual-VSTA User Manual page 61

4. A warning message will pop up. If you want to rebuild the RAID by using the disk drive that you selected in the previous step, click "Next".
Warning: The data on the selected disk drive will be lost.
5. Reboot the system.
6. This RAID is marked as a critical RAID. The RAID software will do the "Duplicating Critical RAID 1" process.
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