6.If the inserted hard disk is not a dynamic disk,
7.
8.Select the newly inserted HDD in the window which appears, and click [Add Mirror] to continue with the mirroring process.
IMPORTANT:
When you click [Add Mirror…], the [Logical Disk Manager] dialog box will appear, but this is not an error. Click [OK].
If you restart the system while creating mirror, mirroring will not be completed. Do not reboot the system until the mirroring process is completed.
TIPS: Creating mirror takes about 37 minutes for 18GB hard disks.