MacOS 10.13 安装Virtualbox失败

最近在新版MacOS 10.13上安装vitral box的时候，遇到了如下图的安装错误：

解决方法如下：

1、Download VirtualBox 5.2 installer
2、Run the DMG, this creates a device
3、Attempt to install from .pkg file, it will fail at the validation step
4、Close installer and run the uninstaller.tool file. DO NOT DELETE THE INSTALLER DEVICE
5、Go to System Preferences -> Security and Privacy -> General and approve the blocked software from ‘Oracle America’
6、Run the install from the same .pkg file, it should now complete successfully

1. 下载virtualBox5.2安装包
2. 运行dmg安装包
3. 双击from.pkg文件，根据提示一直按continue最后会出现上图中的安装失败的提示
4. 打开系统偏好设置-安全与隐私-在通用的tab下点击允许安装来自‘Oracle America’的软件
5. 再次点击双击from.pkg文件，根据提示一直按continue最后会就会安装成功