What you can do is this. Get a Firewire external drive. Clone the installer DVD to the external drive then boot the computer from the external drive and install OS X. The Firewire drive needs to be partitioned using APM and formatted Mac OS Extended, Journaled. To clone:
Clone using Restore Option of Disk Utility
- Open Disk Utility from the Utilities folder.
- Select the destination volume from the left side list.
- Click on the Restore tab in the DU main window.
- Check the box labeled Erase destination.
- Select the destination volume from the left side list and drag it to the Destination entry field.
- Select the source volume from the left side list and drag it to the Source entry field.
- Double-check you got it right, then click on the Restore button.
Destination means the external Firewire drive. Source means the installer DVD.
This can be done on your MBP because it does not require booting the DVD.
I have access to a MBP which can read dual layer DVDs, is there any way I could use it's optical drive in order to install Leopard on the eMac?
If you have a Firewire 6-pin to 9-in cable try this to turn your MBP into a FW Optical drive....
Put the 10.5 Install Disc in the MBP.
Put the MBP into FireWire target disk mode...
Boot the eMac holding the Option/alt key, & see if the Install Disc in the MBP shows up as a boot choice.