You can infact burn the installer to a single layer DVD, using a feature called overburn. This is much simpler than it sounds..

AFTER inserting a blank DVD, bring up terminal, navigate to the dmg folder and type:

hdiutil burn InstallESD.dmg

Depending on your brand of DVD your mileage may vary. It's not unusual to get errors after finishing the burn but as long as the Finishing Burn message is shown, the disc will function as expected.

I think using any of these methods will cause the image to have a different checksum than the original. If that's not important to you, don't fret.


$ man hdiutil

-[no]optimizeimage do [not] optimize filesystem for burning.
Optimization can reduce the size of an HFS or
HFS+ volume to the size of the data contained
on the volume. This option will change what
is burned such that the disc will have a dif-
ferent checksum than the image it came from.
The default is to burn all blocks of the disk
image (minus any trailing Apple_Free).