If your external hard drive is corrupted, try the following instructions to resolve it.
Run an antivirus scan on your computer. Before you run the antivirus scan, make sure that the Buffalo hard drive is connected to the computer.
Open the CMD application with the admin rights. Type the chkdsk /r/f “X” command. (Note: in this command, “X” is the drive letter).
On your Windows computer, run the SFC scan. Open the CMD window and type sfc /scannow.
While using the above two commands, make sure that your drive is connected to the computer.
Finally, try to pair your drive using recovery software.