Backtrack on this thread to see the Terminal commands I used for creating the ISO, and then to write to the SD card use "DD Utility" NOT Terminal. If you have trouble, I'll go through the process again myself over the weekend and post step by step instructions. Don't have the time tonight, but I remember pulling what little hair I have out trying to do this so I'm more than willing to help. I just don't fully recall everything at the moment as it was a couple months ago. All I know is that I failed to write the SD card in terminal. Make the ISO in terminal, but write using DD Utility. I'll help this weekend with step by the step instructions. At the moment I don't have an SD card to spare for the process.