I have downloaded the Backtrack 5 R3 ISO (also an Ubuntu Studio 12.10/Ubuntu 12.10 ISOs) and I would like to burn it to a disk (4.7GB DVD-ROM I have) but I can't seem to get Ubuntu to recognize it.
Startup Disk Creator/XFBurn don't recognize it, but they do allow me to load the ISOs into the program, just not burn it to a disk.
I tried burning it with Brasero and after I selected the ISO in the select disk area it said Please replace the disk with a supported CD or DVD I posted the image: