So something like this? (see attached)
The mach_kernel included is a Vanilla GM version so you may want to change this of course.
mach_kernel version 10.9.4 working on system GM !
Otherwise Bronya could you share your script so I can see where I've gone wrong and for others here?
It is dvd_patcher . See script in old post #13 ! )))))
I modified this script and works.
I understand that not everyone may have a USB Drive spare, however I find this is starting to become way more complicated then it was originally meant to. Reason being that we are basically doing the same as I first mentioned but instead of a USB Drive as the Volume we are creating images as the Volume... I still think the first way with a USB Drive is the way to go as you can customise, reboot the physical computer, try it and when you are happy, then create a Bootable ISO.
1) Copy full dvd on partition.
2) Add yours kexts and mach_kernel in system on partition .
3) With diskutility from partition create dvd.dmg with support read/write.
4) Then can create boot loader DVD by script DVD_patcher !