I followed all the steps about hot to burn a DVD on OS X as in http://www.ubuntu.com/download/desktop/burn-a-dvd-on-mac-osx
but.. (after using the file ubuntu-14.04.3-desktop-amd64.iso )
even that I got "burned" (steps 1-6) properly and the disk was ejected( "normal ending"), I tried to use the dvd (DVD+R 4.7 GB ).. but it does not work.
Indeed, I did shut down the Mac, and I restarted holding "C" key after turning on my computer. What may be my mistake?
I tried to "see" the dvd, but I see the message " The disk you inserted was not readable by this computer.".
Thanks in advance for any comment and help. JJ