I am in need of some help. I am trying to back up my Leopard DVD to a DVD-DL, with no success. I think the issue is that I cannot make the DVD bootable. Can someone explain to me what I need to do (including what options I need to select). Here is what I have tried: In 10.4.10 1. Open Disk Utility 2. Highlight "Mac OS X Install DVD" in the left (the lower one - there are 2 items for every drive on my mac, and this always confuses me) 3. Click "Create New Image" 4. I name the file "Mac OS X Install DVD" and I select the options of Image Format "DVD/CD Master" and Encryption "None" 5. I click save 6. When the image is finished I eject the Leopard DVD. 7. I then insert a blank Dual Layer DVD 8. I go back to Disk Utility 9. I highlight the Mac OS X Install DVD 10. I click Burn. I have created two DVD's that appear to be install DVD's, but they are not bootable. I see a lot of posts saying remember to make it bootable, but I don't know how to do this, or even in which step that is done (in creating the image or burning the DVD). My current suspicion is that it has to do with which drive I am selecting to create the image from, but I am uncertain, and I have been through 2 DVD's already and at $2 a piece, I figure I want to get it right on my third attempt before I create more coasters. Any help would be greatly appreciated.