smylee Posted July 11, 2011 Share Posted July 11, 2011 Hey guys, I'v tried everything, but it still runs in 32 bit mode on my Core 2 Quad processor. Here are commands I tried: sudo systemsetup -setkernelbootarchitecture x86_64 sudo defaults write /Library/Preferences/SystemConfiguration/com.apple.Boot 'Kernel Flags' 'arch=x86_64' sudo nvram boot-args="arch=x86_64" What I got: uname -mi386 ioreg -l -p IODeviceTree | grep firmware-abi | | "firmware-abi" = <"EFI32"> Is there any other way to make it run in 64 bit? *****UPDATE***** Don't know how, but I had <key>Kernel Flags</key><string>arch=i386</string> in by com.apple.Boot.plist Problem solved. Link to comment https://www.insanelymac.com/forum/topic/262142-lion-runs-in-32-bit-mode-only-solved/ Share on other sites More sharing options...
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