For Tiger OS, but probably works for Leopard, too. This is a method I saw on a Slashdot page regarding making an ISO disk image, and it completely works from the Terminal application.

I tried this in order to make a copy of a DVD from Jennifer’s teacher on the class’ “Famous American” presentations. For some reason it produced an image that only partially played. I didn’t put any time into figuring out the problem or how to correct it. Instead my hubby burned the DVD on a different computer because we just wanted to get it done.

Anyhow, here’s a link to the Slashdot page, and also the content of the article.

Create ISO CD/DVD image (.iso) 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.