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View Full Version : New Macbook Air won't boot with 64-bit Kernel




umassche
May 3, 2011, 09:53 PM
I'm using Mac OS X 10.6.7. on new Macbook Air (4GB). It won't boot with 64 bit kernel no matter what! my need is not a performance problem. I need to install "Togl" from source code and it won't get through unless the computer is in 64 bit kernel mode. It can be forced to boot in "64 bit kernel boot mode" but will still run with "32 bit kernel" (according to "Startup Mode Selector.app"). So the "uname -m" command gives "i386" as output. I need to get the output to be "x86_64" to be able to compile Togl. Can someone help please???:confused:



joshfreak
Jun 23, 2011, 04:34 PM
I have a brand new MBA and am running into this also. Even though I've found it to be 64 bit capable thru Terminal, I can't get it to start into this mode for anything I try.:apple:

IscariotJ
Jun 23, 2011, 04:47 PM
Have you tried this using Terminal?

sudo systemsetup -setkernelbootarchitecture x86_64

Taken from here (http://support.apple.com/kb/HT3773).

artivideo.nl
Jun 23, 2011, 04:48 PM
How do you know if any MAC is in 64 bit mode ? How do you switch it from 32 to 64 bit mode ?

IscariotJ
Jun 23, 2011, 04:51 PM
How do you know if any MAC is in 64 bit mode ? How do you switch it from 32 to 64 bit mode ?

uname -m will output either i386, or x86_64

To change, either hold down or 6 and 4 at startup, or see above....