A lot of third-party audio/video app (Screen recording apps) will install the additional audio device in the system preference panel.
To list all third party kernel extensions in Mac OS X:
In terminal:
kextstat | grep -v com.apple
To uninstall the extension:
sudo kextunload -b NAME_OF_THE_EXTENSION
e.g. sudo kextunload -b com.globaldelight.driver.Boom2Device
If we want to manually install an extension:
- Copy the .kext file(s) to /System/Library/Extensions/
- Open the Terminal and type:
cd /System/Library/Extensions/- Type the following commands at the terminal, replacing the kext name with the one you are installing
sudo chmod -R 755 kextfile.kext
sudo chown -R root:wheel kextfile.kext
5. Now remove the kext caches:
sudo rm -R Extensions.kextcache
sudo rm -R Extensions.mkext
6. Reboot the Mac
Reference:
Morning Lab 