https://blog.faceutil.com/2017/04/11/%ec%a7%80%ec%9a%b4-%ed%8c%8c%ec%9d%bc-%eb%b3%b5%ea%b5%ac-recuva-%ed%8f%ac%ed%84%b0%eb%b8%94-%eb%8b%a4%ec%9a%b4%eb%a1%9c%eb%93%9c-%ec%97%85%eb%8d%b0%ec%9d%b4%ed%8a%b8-%ed%94%84%eb%a1%9c%ea%b7%b8/