ST7200.7 Seagate 80G hard disk repartition data recovery successfully

Case:
Before the installation system, all the backup was backup. After the installation was completed, I found a folder when I returned to the original disk. I don’t know how to lose it.

Solution:
There are 2 districts in the hard disk, one 20G, and one 50G.Customers recall that the previous partitions are 11G 2020 data. The data is probably analyzed in the E drive. The estimated data is all there, and then the previous partition table is restored. There is no data needed by the customer.Hours, it feels wrong. How can our equipment 80g at a maximum of 30 minutes?The hard disk found a large number of bad sectors with MHDD detection. Finding the cause of the bad sector caused the data directory to be lost, so the whole scene, scanning the data OK to reproduce all. Data recovery is a technology and an artistic, accurate judgment and a large number of large quantitiesExperience is greatly improved to the security performance of your restoration of data, technology can learn, experience must accumulate