In my first blog, I explained how to bootable USB in windows through UUI. Today, I will discuss it in Ubuntu. Sounds interesting.;)
Search Start Up Disk Creater on dashboard and select it. It will pop up the window.
As shown in the figure you will be able to see the source disk image(.iso) or CD in your system. Select any one of them.
Then select the removable disk to be used to make it bootable.
Forward to click the option Make startup disk and you are done with it.