Create ISO CD/DVD image (.iso) with Mac OS X
1. Insert CD/DVD source
2. Fire up a Terminal, you can then determine the device that is you CD/DVD drive using the following command:
$ drutil status
3. Umount the disk with the following command:
$ diskutil unmountDisk /dev/disk1 Disk /dev/disk1 unmounted
4. Create the ISO file with the dd utility:
$ dd if=/dev/disk1 of=filexxx.iso bs=2048
5. Test the ISO image by mounting the new file (or open with Finder):
$ hdid filexxx.iso
6. The ISO image can then be burnt to a blank CD/DVD.
