What is a Kernel Extension in Mac Os X?

Installing a Custom Kernel Extension

A kernel extension (or kext) is a bundle that performs low-level tasks. Kexts run in kernel space, which gives them elevated privileges and the ability to perform tasks that user-space apps can't. Always consider alternatives before creating a kext.

What is a MacOS Kernel Extension?

Kernel extensions , sometimes referred to as kexts, enable developers to load code dynamically into the macOS kernel. This provides access to internal kernel interfaces, allowing complex apps to function properly.

Is it Safe to Enable Kernel Extensions on Mac?

Kernel Extensions Are Bad for Security
In addition to enabling users to run older versions of macOS, Reduced Security is required for other actions that can put a users system security at risk, such as introducing thirdparty kernel extensions.

How do I Enable Kernel Extension on Mac?

Open Apple System Preferences.
Open Security & Privacy.
Select the General tab.
If general settings are locked: Click the lock icon in the lowerleft corner. Enter your device password. Click Unlock.
Click Allow next to kernel extension that requires approval.

How do I Remove Kernel Extensions from my Mac?

Open Terminal and enter the following command: sudo kextunload /System/Library/Extensions/AppleThunderboltNHI.kext.
If that fails to work, you can also just forcedelete the kext using.
Restart your MAC.