I have a disk image (.dmg) that is supposed to be an emergency boot CD. When I mount the image and burn the CD I get a CD that shows as bootable in the Start-Up System Preferences but the computer will not boot from it.
I have tried starting holding down the "c" key and "shift-option-command-delete" but the Mac just goes to the hard drive.
What is wrong? What have I missed?javascript:void(0)
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