UNetbootin for Mac
Unetbootin for Mac allows you to create bootable USB drives for Ubuntu and other Linux distributions without burning a CD. Unetbootin may allow you to download one of the many external distributions, or provide your own Linux .iso file. You can create a bootable USB drive that can be booted by Unetbootin for MacOS. It loads distributions by downloading ISO (CD image) files for you or using an ISO file you have already downloaded. Select an ISO file or distribution to download, select a target drive (USB drive or hard disk), and then reboot. If your USB drive does not show up, reformat it to FAT32. If you used the "USB Drive" installation mode: After rebooting, boot from the USB drive. On the Mac, this usually involves pressing a button, such as Esc or F12, as soon as you turn on your computer, and on the Mac, you must hold down the Options key before booting OSX. If you used the "Hard Disk" installation mode: After rebooting, select Access from the Mac boot menu....