Mac下VirtualBox安装Ubuntu出现问题

Mac下VirtualBox安装Ubuntu出现问题：

The system is running in low-graphic mode

Your screen, graphics card and input devices settings could not be detected correctly. You will configure these yourself.

同时按住control + alt + F1 进入命令行界面

解决方法：

01.## sudo apt-get update 

02.## sudo apt-get install virtualbox-guest-dkms 

03.## reboot

开机按住shift键