I am sorry ,at first ,我上载了一个错误的文件，那个是监测自己是否有联网的，现在这个才是监测自己是否有硬盘、U盘、光盘等存在电脑里。-I am sorry, at first, I uploaded a wrong file, that is to monitor whether they have networked, this is to monitor whether they have the hard di