(1), download the Ubuntu operating system.
Official website: http://releases.ubuntu.com/, download a desktop version of ISO
Three Modes of difference:
Desktop is a livecd+ graphical installation
Server version (command-line mode only, no graphics section)
Alternate is the text installation mode (only keyboard operation in the installation process, similar to the installation interface and the first half of Windows).
(2), download USB stick Boot tool (Universal_usb_installer), Universal USB Installer is a self-booting Linux u disk creation tool.
Official website: http://www.pendrivelinux.com/universal-usb-installer-easy-as-1-2-3/
(3), the production of U disk startup program
Just select the downloaded ISO file and select the corresponding version and click Create to create a few minutes to complete
Detailed introduction of the production process: http://www.pendrivelinux.com/universal-usb-installer-easy-as-1-2-3/
(4), restart, you can start the USB stick or USB stick installation.
USB flash drive to boot or install Ubuntu OS