VIA VT8237 Serial ATA RAID Introduction
Duplicate Critical RAID 1 Array
When booting up the system, BIOS will detect if the RAID 1 array has any inconsistencies between user data and backup data. If BIOS detects any inconsistencies, the status of the disk array will be marked as critical, and BIOS will prompt the user to duplicate the RAID 1 in order to ensure the backup data consistency with the user data.
If user selects Continue to boot, it will enable duplicating the array after booting into OS.