Create an ISO image from CD/DVD in Mac OS X

Quick how to, create an ISO image in Mac OS X.

  • Open a Terminal Window
  • Find out which device is your optical drive
diskutil list
  • Note which /dev/diskX correspondsĀ to your optical drive.
  • Unmount your disk drive
sudo umount /dev/diskX
  • Create a copy of your disk to a file
dd if=/dev/diskX of=mydisk.iso
  • Let the copy run, it could take some time for it to complete.

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