It is a common data recovery case that the drive letter is missing after expanding the C drive. It should be noted that after expanding the C drive and the drive letter is missing, do not rebuild a new partition. Protect the site where the data is lost, and recover the data to the greatest extent. See the text for specific recovery methods.
Tool/Software: Meteor Data Recovery Software
Step 1: After first Baidu search and download the software to run, double-click the partition to be restored, then decompress and right-click the software icon to select the "Run as administrator" software (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 to restore data directly. If the partition is deleted by mistake, data needs to be recovered from the physical disk.
Step 3: It may take a few minutes to half an hour to wait for the software to scan, just wait a little patiently.
Step 4: After the software scans the data, put it in the "Recovered Partition" directory.
Step 5: Check all the files to be recovered, right-click and select "Copy Checked Files", the program will copy the checked files.
Step 6: The last step is to just wait for the software to copy the files.
Note 1: If you want to recover a partition accidentally deleted, you need to pay attention, do not rebuild a new partition before data recovery.
Note 2: The recovered data cannot be found in the partition and needs to be temporarily saved to another disk.