https://blog.faceutil.com/2017/03/16/%eb%84%a4%eb%a1%9c-%eb%b2%84%eb%8b%9d%eb%a1%ac-%ed%8f%ac%ed%84%b0%eb%b8%94%eb%ac%b4%ec%84%a4%ec%b9%98-nero-portable-%e2%99%ad/