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How do we know what extensions use Legacy?

How do we know what extensions use Legacy?

iMac 21.5″, macOS 10.15

Posted on Jul 16, 2020 9:15 AM

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Question marked as Best reply

Posted on Jul 16, 2020 9:51 AM

The next major release of macOS will not allow third party kernel extensions. It's just warning that any third party software you're using that installs such extensions will not work in macOS 11.


All vendors who now user kernel extensions will have to use a different method to load items at startup.


https://support.apple.com/en-us/HT210999


The message should have mentioned the name of the vendor the extension is from. But in short, all third party extensions are in the following location, along with ten default extensions installed with the OS.


/Library/Extensions


Of those you find in this folder, the following are installed by the OS. Any others would have been added by third party software you installed.


ACS6x.kext

ArcMSR.kext

ATTOCelerityFC8.kext

ATTOExpressSASHBA2.kext

ATTOExpressSASRAID2.kext

CalDigitHDProDrv.kext

HighPointIOP.kext

HighPointRR.kext

PromiseSTEX.kext

SoftRAID.kext


For now, you don't need to do anything.

1 reply
Question marked as Best reply

Jul 16, 2020 9:51 AM in response to sshannon4171

The next major release of macOS will not allow third party kernel extensions. It's just warning that any third party software you're using that installs such extensions will not work in macOS 11.


All vendors who now user kernel extensions will have to use a different method to load items at startup.


https://support.apple.com/en-us/HT210999


The message should have mentioned the name of the vendor the extension is from. But in short, all third party extensions are in the following location, along with ten default extensions installed with the OS.


/Library/Extensions


Of those you find in this folder, the following are installed by the OS. Any others would have been added by third party software you installed.


ACS6x.kext

ArcMSR.kext

ATTOCelerityFC8.kext

ATTOExpressSASHBA2.kext

ATTOExpressSASRAID2.kext

CalDigitHDProDrv.kext

HighPointIOP.kext

HighPointRR.kext

PromiseSTEX.kext

SoftRAID.kext


For now, you don't need to do anything.

How do we know what extensions use Legacy?

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