If any of the above fail after CHKDSK, the drive likely has – replace it.
/r : Locates bad sectors and recovers readable information (takes longer than /f ). /x : Forces the volume to dismount first if necessary. For a thorough fix, use chkdsk X: /f /r . chkdsk on external drive fix
When an external drive reports corruption, Windows marks the volume dirty. chkdsk performs a three-stage process: If any of the above fail after CHKDSK,