So I have an old G3 imac with mac os 9.2 and mac os 10.1.5 installed on it. I would like to use this computer to make a bootable ubuntu usb stick. However when I followed the instructions for using terminal in os x,it did not work.I dont know if the computer is just too old. I am new to linux. Is there any way that I can use this computer to create a bootable usb?