let me tell you, it' takes a while. Anywayss, I don't have a mac at home that can burn dual layer media. So i needed to get rid of some stuff on the leopard install. here is basically what I did: It takes about an hour or so over all, and the disc is bootable. and it also taks about 10-15 minutes too bootup. but i'm running leopard now so How to install Leopard with only single layer DVD media OK, I have just created a bootable copy of the Leopard install DVD using the following method: 1. Open the Leopard installation DVD using Disk Utility. 2. Using the Disk Utility, create a new dual layer (8.5GB) sparse image called leopard (actual filename will be leopard.sparseimage) and mount it. 3. Restore the Leopard installation DVD to the mounted leopard.sparseimage (not the image file.) 4. Open the mounted leopard.sparseimage with Finder, and delete the XCodeTools directory., some of the languages, and get rid of the printer drivers 5. Unmount the mounted leopard.sparseimage. 6. Using the Disk Utility, create a new single layer (4.4GB) spare image called boot (actual filename will be boot.sparseimage) and mount it. 7. Restore the leopard.sparseimage image file to the mounted boot.sparseimage (not the image file.) 8. Unmount the mounted boot.sparseimage. 9. Burn the boot.sparseimage to your single layer DVD media.