Ubuntu has many advantages compared with other operating systems. Among them, Ubuntu has a feature LiveUSB. With LiveUSB, Ubuntu can be used without installing them. In addition, LiveUSB lighter than liveCD.
Requirement

1. Ubuntu image. You can download here
2. Universal USB Installer. You can download here
3. At least 1 GB USB stick
4. Boot from USB in Bios

Here are the steps to make Ubuntu LiveUSB on Windows

• Run Universal USB Installer.

• Click create.

Wait until finished. Then click close.

• Boot from USB Flashdrive

• Now, System will boot from USB Flashdrive to run Ubuntu LiveUSB.