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10.6: How much of Snow Leopard isn't yet 64-bit?
Authored by: automandc on Sep 18, '09 01:21:52PM

You can also look at "Extensions" in the "Software" section of the System Profiler utility. (Select Apple Menu->About This Mac and then click "More Info"). One of the columns shows whether the .kext is 64-bit capable. Only those extensions that are not 64-bit will show up with a "No" in that column.

On my late 2007 MBP (MacBook Pro 3,1), there are 11 non-64 bit extensions (that is, extensions that are ONLY 32 bit). 9 of those are Apple SW. Compare with using the command in the tip, which seems to indicate 334 i386 arch. extensions. That must be double counting those that are both 32 and 64 bit.

I believe that once Apple provides a 64-bit clean firmware for the MBP 3,1, then I will be able to switch to the 64-bit Kernel (and need to replace/get rid of the Microsoft IntelliMouse driver).



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10.6: How much of Snow Leopard isn't yet 64-bit?
Authored by: wfolta on Sep 18, '09 06:25:20PM

Very good post. I see 8 non-64-bit libraries with the System Profiler, and that's 3 CHUD (developer/debig) and 5 libraries with 6.0 in their names that also exist without the 6.0, so I think they are all compatibility:

3 CHUD
1 BSDKernel6.0
1 IOKit6.0
1 Libkern6.0
1 Mach6.0
1 System6.0

Pretty good results.



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