I have downloaded ubuntu-14.04.3-desktop-amd64.iso and created a boot-able stick with the following command from the terminal:
Firstly determine your usb stick drive letter with the following command:
This will give you a different drive letters. Locate your stick and check the drive letter.
Then use the following:
dd bs=4M if=(ENTER PATH TO YOUR)/ubuntu.iso of=/dev/sd(ENTER YOUR DRIVE (stick) LETTER HERE)
dd = convert & copy file
of = File
Below is the command I used:
dd bs=4M if=/home /tutorial/Downloads/ubuntu-14.04.3-desktop-amd64.iso of=/dev/sde
I am currently running on the Ubuntu that boot from the stick.
Please make very sure the path to your iso is correct as well as the drive letter otherwise it will not work.
I hope this helps.