Problem description: After
GHOST, only C drive is left because when the system was reinstalled, the wrong option was selected, which caused the entire hard drive to be installed as C drive. After installation, naturally only one drive was left. After the system is installed, the partitions are all merged into the other partitions of the C drive. How to retrieve the specific recovery method is described below. 
Tools/Software: Extreme Data Recovery Software
Step 1: After opening the Baidu search and downloading the software, select the disk that needs to be recovered, and then click the "Start Recovery" button. 
Step 2: Wait for the software scan to complete and it takes about a few minutes to half an hour. 
Step 3: After the software finds the data, the software will list the found disks. 
Step 4: Select the data to be restored, right-click and select "Copy Selected Files", the program will copy the checked files. 
Step 5: Just wait for the program to COPY the data. 
Note 1: If you want to restore GHOST, only C drive is left. Before data recovery, do not save new files to C drive.
Note 2: After GHOST, only the data recovered from drive C needs to be temporarily saved to other drives.