QUESTION :
I wish to create a bootable Ubuntu Server flash drive. I downloaded the ISO, but all instructions I find online don’t work because in this version of OS X (Lion) the ISO cannot be mounted because it is a hybrid ISO. This means I can’t create a bootable flash drive using either command line or disk utility. How can I create a bootable flash drive using Mac OS X.
ANSWER :
On Ubuntu’s Website
http://www.ubuntu.com/download/help/create-a-usb-stick-on-mac-osx