Making a back up copy of OSX Leopard install disk on a SL-DVD

I got OSX Leopard tonight and I want to make a back up copy.... but there are a lot of weird things going on in the partitioning of the disk.... Not to mention it's more than 7GB. Of course, you know, a ton of that are language packs and such that you know that you are never going to use so let's shrink it down..... After searching google and experimenting with my own knowledge I've come up with this process.

Overview: Basically you just need to be able to edit what is on the CD. Of course, CD's are not read/write and if you create an ISO, it most likely will only mount read only. What we're going to do is create an brand new image that is read/write and then we'll dump what's on the entire DVD onto that image. Once we're in that position, we can delete things we don't need on the install CD. Once we have it the way we want it, we'll create another image for a 4.7GB DVD and copy it over to that.... then we can do what we want.

1. Insert the OSX Leopard DVD
   
2. Open Disk Utility
   
3. Create "New Image"
   
   • Name can be anything
     
   • It's easiest to save on your desktop
     
   • Size: 8.0GB (Dual Layer)
     
   • Encryption: None
     
   • Format: Spare Disk Image
   
   
4. Click the image you just created and then click the "restore" tab for that.
   Drag the "Mac OSX Install DVD" image into the source and then drag the image you just created into the destination field.
   
5. Click Restore
   
6. Go grab a soda . . . Take a Nap . . .
   
7. Create an "Extras" folder (or whatever you want to name it) on your desktop. We will use this to dump things to that we don't need on the first install procedure.
   
8. In Finder, go to to "Go To Folder" option under the "Go" menu and type in "/Volumes/[image name]/System" and click go. (Of course, replace image name with whatever you named your 8.0GB image above)
   
9. Go into the Installation folder and then into packages and delete what you don't need and move what you may need later but not immediately (Language packs, printer drivers, etc can safely be deleted or moved to your extras).
   
10. Drag the "Optional Installs" folder from the top of the CD tree into the extras folder you created above and delete from your image (we'll dump this to another DVD later, if desired)
    
11. Empty your trash and then "Get Info" for your mounted image. If it's less than 4.5GB or so, continue... if not, go back and delete/move some more.
    
12. Create 2 new images with the same settings as at the beginning of this how-to except both of these should be 4.7GB Single Layer DVD size (leopard-disc1 and leopard-disc2 would be good names for these). If you are an advanced user, you can create the size as custom and fill in variables that would hold the specific data that you have created - this would create smaller image files for archival purposes.
    
13. Drag anything you dumped in to the extras folder into the disc2 mount in finder
    
14. Click on your disc1 image in disk utility and click the restore tab.
    
15. Repeat the same thing as we did above except your source is the image that we just deleted the extras off of and the destination is your disc1 image.
    
16. Take another nap . . . You'll be well reseted for the install :)
    
17. You can now burn directly from those 2 images.
    

Theoretically, If you want an ISO image, you can get DMGConverter (http://www.versiontracker.com/dyn/moreinfo/macosx/32275) and use that to convert your sparseimage files to DVD/CD Master files and then simply rename those with an ISO extension.

Reference Link