I am trying to install ubuntu onto my flash drive using the instructions from this website: http://www.ubuntu.com/download/help/create-a-usb-stick-on-mac-osx.
After step 8, the terminal asks for my password, which it accepts and then pops up with this error message:
dd: /dev/rdisk1bs=1m: Operation not supported.
I have also tried making the last m in that statement capital and then the system does not ask me for my password but the error message still pops up. What is happening and why?