I have an ISO image file that I want to burn so I can dual boot with Boot Camp. Whenever I go into Disk Utility and click on burn, it prepares the file and then it says finishing. After an error message comes up that says "Unable to burn "Boot_Camp_File.ISO." (The disc drive didnt respond properly and can't recover or retry.) I tried many times with numerous discs. I am using the MacBook Pro mid-2012 13 2.9GHz. The discs I am using memorex DVD+R DL. I cannot burn with any other computer because it doesn't support DVD+R DL. I tried using Boot Camp with a USB flash drive but it didnt work. DVD's are the only way I can use Boot Camp. What can I do to fix the problem?