Case:
The hard disk can be detected by turning on, the system cannot enter, and the installation system also fails.Put a mobile hard disk box connecting the computer and do not recognize the disk.
Solution:
The hard disk 0 magnetic tract is damaged, and there are a small amount of physical and logical bad ducts. Use the HDDUP mirror tool mirror to fail. Then use the partition repair tool to restore the partition table, and the data is 100%recovered.