Case1：报错Remote couldn't create file：Read-only file system
输入
adb disable-verity
adb reboot
adb root
adb remount
Case2：/system/bin/sh: can't create C:xxx.txt: Read-only file system
Android设备的文件系统是基于Linux的，而不是Windows，保存 dumpsys 文件到 xxx使用：
adb shell dumpsys audio > xxx