Terminalにて下記コマンド入力
sudo add-apt-repository ppa:gezakovacs/ppa
sudo apt-get update
sudo apt-get install unetbootin
UNetbootin - Homepage and Downloads
UNetbootinallowsyoutocreatebootableLiveUSBdrivesforUbuntu,Fedora,andotherLinuxdistributionswithoutburningaCD.ItrunsonWindows,Linux,andMacOSX.
unetbootin.github.io