A kernel extension (or kext for short) is a plugin to the kernel that is in the form of a bundle (similar to apps). An example of a use if kexts would be to map the built-in keyboard for a Macbook Pro

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How can I disable kext signing in Mac OS X 10.10 Yosemite?

I know the disadvantages of disabling kext signing, but I was wondering how I can actually disable this on Mac OS X 10.10 "Yosemite"?
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Macbook Pro.[Mid-2012] Sound isn't working

Suddenly, My MBP sound isn't working. I have tried couple of way to resolve the problem but nothing is working. Here is some of the screenshot: No, input or output sound. I would like to know 1) ...
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MacBookAir kernel_task at 300% and rising [duplicate]

I have a MacBookAir5,1 connected to a Thunderbolt Display. When it gets very hot, PID 0 "kernel_task" uses ever more CPU until reaching 340% and slowing the Mac down sufficiently to make me restart ...
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How to unload kernel modules

When I run kextstat, it gives me a list of the currently loaded kernel modules. How to I go about using the information gathered from this command to unload a kernel module?
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File location of kernel extensions?

Is there an easy way to make the mapping from kernel extension to the file it came from? I can get the list of currently loaded kernel extension via kextstat. This gives me the bundle names, like ...