Reinstall the system data loss recovery data recovery

Case:
After the customer communicates with the engineer, there is only one 250G C drive after the computer reinstallation system. The other disk is lost. The original C drive is 100G. The important data is placed in the subsequent small partition.Later, I did not write a lot of data.

Solution:
According to customer descriptions, the success rate of preliminary judgment recovery should be relatively high.By analyzing the original file storage structure of the hard disk through the bottom layer of the disk, it was found that there were three partitions, and the latter two data partition structures were intact. Through artificially constructing partition information, all data recovered.