Hi
it seems that most resort the installing the beta drivers.
There is also another way to get your existing Nvidia to work, as locomacg6 indicated
I have done the following steps with success.
- Go to Apple Menu -> About This Mac
- In the resulting window, click on the text that says "10.11.6" - it will reveal the build number - take note of this
- Navigate to: /System/Library/Extensions/NVDAStartupWeb.kext/Contents/
- Drag the Info.plist to your desktop and open it with your editor of choice
- If you use TextEdit - make sure to turn off text correction and the smart features
- Look for NVDARequiredOS in the Info.plist
- Replace the build number after that with your current build number
- Save the Info.plist
8. Run the following Terminal commands in order:
- sudo rm -Rf "/System/Library/Extensions/NVDAStartupWeb.kext/Contents/Info.plist"
- sudo cp ~/Desktop/Info.plist "/System/Library/Extensions/NVDAStartupWeb.kext/Contents/Info.plist"
- sudo /usr/libexec/repair_packages --repair --standard-pkgs --volume /
- sudo rm -r /System/Library/Caches/com.apple.kext.caches
- sudo touch /System/Library/Extensions
- sudo kextcache -update-volume /
9. Reboot - and ensure you still have nvda_drv=1 in your
config.plist
Please note, I take no credit, these steps are documented here: https://www.******.com/r/hackintosh/comments/50onhm/el_capitan_security_update_2016001_broke_my/