After reinstalling the system, there is only one disk because when the system is reinstalled, the wrong option is selected, which leads to the whole hard disk being installed as the C disk. After the installation, only the C disk is naturally left. If you want to recover the files of the lost partition, you need to pay attention not to save new files to the current C drive (because the files saved now may overwrite the files of the original DEF disk). You can remove the hard disk and hang it on another computer as a slave disk or connect a mobile hard disk to restore the data to the mobile hard disk. See below for specific recovery methods.
Tool/Software: Meteor Data Recovery Software
Step 1: After downloading and decompressing the program, double-click the partition to be restored, then right-click the software icon and select "Run as administrator" (if it is an xp system, you can directly double-click to open the software).
Step 2: After the program runs, double-click the physical disk that needs to restore data.
Step 3: It usually takes a few minutes to half an hour for the software to scan.
Step 4: The software will quickly put the found data into the "Recovered Partition" directory.
Step 5: Check all the files that need to be recovered, then click Save in the upper right corner, the "File Save" button, and copy the checked files.
Step 6: The last step is to wait for the program to copy the data.
Note 1: If you want to restore and reinstall the system, only one disk needs to be paid attention to. Before data recovery, do not save new files to the C drive.
Note 2: After reinstalling the system, only the data recovered from one disk needs to be temporarily saved to other disks.