The pit of the Ubuntu installation process

1. Ubuntu 16.04 configures domestic high-speed apt-get update source

https://www.linuxidc.com/Linux/2017-11/148627.htm

https://mirrors.tuna.tsinghua.edu.cn/help/ubuntu/

 

2. VirtualBox ubuntu virtual machine and host shared folder

https://blog.csdn.net/pan_tian/article/details/22619687