Create DVD/CD ISO on Mac

The following text is taken from http://www.slashdotdash.net/2006/08/14/create-iso-cd-dvd-image-with-mac-os-x-tiger-10-4/.

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
 Vendor   Product           Rev
 MATSHITA DVD-R   UJ-835E   GAND

           Type: DVD-ROM              Name: /dev/disk1
      Cur Write:    8x DVD          Sessions: 1
      Max Write:    8x DVD            Tracks: 1
   Overwritable:   00:00:00         blocks:        0 /   0.00MB /   0.00MiB
     Space Free:   00:00:00         blocks:        0 /   0.00MB /   0.00MiB
     Space Used:  364:08:27         blocks:  1638627 /   3.36GB /   3.13GiB
    Writability:
      Book Type: DVD-ROM

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 (may take some time):

$ dd if=/dev/disk1 of=file.iso bs=2048

5. Test the ISO image by mounting the new file (or open with Finder):

$ hdid file.iso

6. The ISO image can then be burnt to a blank CD/DVD.