Ubuntu under Production system Startup disk

Production System U Disk:

sudo umount /dev/sudoddif=/home/abby/software/ubuntu-16.04. 3-desktop-amd64.iso of=/dev/SDC3100800+0in3100800+ 0 Records out 1587609600 bytes (1.61.5306.355.2 MB/s

To view disk information:

sudo fdisk-l

Also, Ubuntu 16.04.3 lts image download:
Https://www.ubuntu.com/download/desktop

Reference:

Http://www.cnblogs.com/jkmiao/p/6248918.html
http://blog.csdn.net/chenguolinblog/article/details/17919945
http://blog.csdn.net/l0605020112/article/details/20048899
Http://www.linuxidc.com/Linux/2015-10/123786.htm
Http://www.linuxidc.com/Linux/2015-02/113585.htm

Ubuntu under Production system Startup disk