Reinstalling the system resulted in successful data loss recovery

Case:
Notebook computer, 500G hard disk, customer description After the computer reinstalls the system, only 40G C drive is left. Other disk data is lost. The original C drive is 100G. The important data is placed in the subsequent small partition. There is no large amount of data to write laterenter.

Solution:
The engineer analyzed the original file storage structure of the hard disk through the bottom layer of the disk. It was found that there were three partitions. The latter two data partitions were intact. Through the artificial construction of partition information, all data recovered.