We could base a method on what we did previously for High Sierra at
https://forums.macrumors.com/thread...o-update-success.2070676/page-2#post-25176205
So modifying the commands in that thread (which previously successfully made a bootable dvd of high sierra) we could proceed thusly:
First you have to have the full installer of Mojave in your Applications folder. You can get it here:
https://itunes.apple.com/us/app/macos-mojave/id1398502828?mt=12 from the mac app store if you haven’t already.
Then run the following commands in terminal:
hdiutil create -o /tmp/Mojave.cdr -size 8000m -layout SPUD -fs HFS+J
hdiutil attach /tmp/Mojave.cdr.dmg -noverify -mountpoint /Volumes/install_build
sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia --volume /Volumes/install_build
mv /tmp/Mojave.cdr.dmg ~/Desktop/InstallSystem.dmg
hdiutil detach /Volumes/Install\ macOS\ Mojave
hdiutil convert ~/Desktop/InstallSystem.dmg -format UDTO -o ~/Desktop/Mojave.iso
rm ~/Desktop/InstallSystem.dmg
and then you can rename Mojave.iso.cdr to Mojave.iso.
You can then use this to burn it to a dual layer dvd:
sudo hdiutil burn /Users/YOURNAME/Desktop/Mojave.iso
where you replace "YOURNAME" with the username for the account you are logged into at the time.
and then boot to startup manager with option key to select the dvd and install Mojave from it.
I haven't tried this yet and just because it worked in High Sierra doesn't guarantee it will work in Mojave. If not then maybe we can modify the commands somehow to make it work. It was easy to make a dvd of lion and mountain lion. But ever since Mavericks it became quite difficult to make a bootable dvd and progress on this has always been experimental. Nevertheless we have so far had success in making dvds of every system from lion to high sierra. Prior to lion you could buy disks from apple. Hopefully we can have success with Mojave too.
I spoke before on how to make a bootable usb of the Mojave installer at
https://forums.macrumors.com/threads/make-the-bootable-mojave-usb-installer.2136707/ and that is the most efficient way to make a bootable installer.
But some are old fashioned and have bootable disks for every system going way back to Mac OS 7.1 (including high sierra).
So if you want to be really geeky you can try to make a bootable DVD of Mojave. Be aware however that a bootable DVD is much slower to boot up than a usb, so if you want to do it as quickly as possible, then the usb is the way to go, not dvd. But if geekiness is your thing then go ahead and try the dvd.