Create ISO images in Mac OS X

To create an ISO image in Mac OS X:

1. Unmount the CD/DVD: diskutil unmountDisk /dev/disk2
2. Make the iso (and wait...): dd if=/dev/disk2 of=name.of.the.file.iso
3. Mount the image to test it (or use the Finder): hdid name.of.the.file.iso

To get the name of the device (i.e., /dev/disk2) do: drutil status