https://blog.faceutil.com/2022/10/21/%ed%95%98%eb%93%9c-%ec%8a%a4%ec%ba%94hdd-scan%ec%9d%84-hdd-%eb%b2%a0%eb%93%9c%ec%84%b9%ed%84%b0-%ea%b2%80%ec%82%ac-hdd-regenerator-%ec%b9%98%eb%a3%8c-%e3%8e%93/