Thank you Allan, I have attach a new disk to the same motherboard and install a new OS on it. The original four disks in RAID 10 volume are displayed as offline in Intel RST manager and I only have the option clean metadata.When I search the disk event in the help of IRST manager application, it shows the disk offline can be solved by unlock the disk. Shall I still click clean metaata or how to unlock all the four disks that displays as offline?
thanks!