Legacy system extension

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Legacy system extension

Is there a way to find which product or app installed legacy system extension? Developer name alone often does not provide enough information.

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MacBook Pro 15″, macOS 10.12

Posted on Jun 10, 2020 11:46 AM

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Answer 1

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Barney-15E

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116,464 points

Jun 10, 2020 1:04 PM in response to 7spoons

If you open System Information > Software > Extensions might give you more info. You can sort the list by "Obtained from" to separate Apple extensions from third-party.

Developer name alone often does not provide enough information.

How many third party kernel extensions do you have installed? You should assume all of them will need to be updated to run in the next major macOS.

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Answer 2

7spoons Author

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Jun 10, 2020 1:54 PM in response to Barney-15E

Thank you, Barney-15E! This is helpful.

It looks like my MBP has close to two dozen third-party extensions installed. They appear to be related to a number of products. However, it still does not tell me which app or product installed them. I can sort of guess from / google bundle names but it would be nice if MacOS helped me.

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Answer 3

Barney-15E

Level 10

116,464 points

Jun 10, 2020 5:44 PM in response to 7spoons

There are about 10 non-Apple extensions that are installed by Apple.

Copy/Paste this command into Terminal and hit return.

kextstat | grep -v com.apple

That will list all non-Apple, loaded kexts.

I thought those kexts were all in /System/Library/Extensions, but either I don't remember correctly or they moved them outside of /System.

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Legacy system extension

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