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    • Allan

      Forum Rules   04/13/2018

      Hello folks! As some things are being fixed, we'll keep you updated. Per hour the Forum Rules don't have a dedicated "Tab", so here is the place that we have our Rules back. New Users Lounge > [READ] - InsanelyMac Forum Rules - The InsanelyMac Staff Team. 
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richtig

32 bit vs. 64 bit EFI ?

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http://arstechnica.c...hat-good-night/

 

On those older Mac Pros that shipped with unsupported graphics cards, Apple hasn't deigned to update their firmware to support 64-bit EFI. You can run this command in Terminal to see whether you have a 32-bit or 64-bit EFI:

 

ioreg -l -p IODeviceTree | grep firmware-abi

 

All of the Macs dropped by Mountain Lion are going to return "EFI32"

 

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Maybe a database of "64 bit EFI" bios video cards & motherboards should be compiled, if not already done.

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