1、查看windows的激活状态（CMD下）
slmgr.vbs -dlv
slmgr.vbs -dli
2、virtual box安装报错
安装扩展包 C:/vbox/Oracle_VM_VirtualBox_Extension_Pack-5.0.0-101573.vbox-extpack 失败。
VBoxExtPackRegister returned VERR_VERSION_MISMATCH, pReg=0000000000000000 ErrInfo='VirtualBox version mismatch - expected 5.0 got 5.2'.
返回 代码: E_FAIL (0x80004005)
组件: ExtPackManagerWrap
界面: IExtPackManager {edba9d10-45d8-b440-1712-46ac0c9bc4c5}
3、自身系统环境变量
C:\PROGRAM FILES (X86)\INTEL\ICLS CLIENT\;C:\PROGRAM FILES\INTEL\ICLS CLIENT\;C:\PROGRAM FILES (X86)\NVIDIA CORPORATION\PHYSX\COMMON;C:\MENTORGRAPHICS\9.5PADS\SDD_HOME\COMMON\WIN32\BIN;C:\MENTORGRAPHICS\9.5PADS\SDD_HOME\COMMON\WIN32\LIB;%MGC_HOME%\BIN;%MGC_HOME%\LIB;%SYSTEMROOT%\SYSTEM32;%SYSTEMROOT%;%SYSTEMROOT%\SYSTEM32\WBEM;%SYSTEMROOT%\SYSTEM32\WINDOWSPOWERSHELL\V1.0\;C:\PROGRAM FILES\COMMON FILES\THUNDER NETWORK\KANKAN\CODECS;C:\PROGRAM FILES\INTEL\INTEL(R) MANAGEMENT ENGINE COMPONENTS\DAL;C:\PROGRAM FILES\INTEL\INTEL(R) MANAGEMENT ENGINE COMPONENTS\IPT;C:\PROGRAM FILES (X86)\INTEL\INTEL(R) MANAGEMENT ENGINE COMPONENTS\DAL;C:\PROGRAM FILES (X86)\INTEL\INTEL(R) MANAGEMENT ENGINE COMPONENTS\IPT;C:\Program Files\WIDCOMM\Bluetooth Software\;C:\Program Files\WIDCOMM\Bluetooth Software\syswow64;C:\Program Files\Git\cmd;C:\Qt\Qt5.11.1\5.11.1\mingw53_32\bin;C:\Qt\Qt5.11.1\Tools\mingw530_32\bin
4、linux下内核文件进入
cd /lib/modules/`uname -r`/kernel/fs