Lion Kernel issue Macbook pro 13 mid 2010

[Danielxc]

hi everyone,
i have macbook pro 13 mid 2010, i update my system os x to lion about 2 hours ago..
have question, before update i use snow leopard 10.6.8 with kernel 32 bit.. after update to lion i still use kernel 32 bit .. (by Activity Monitor)
it's should be 64 bit right ?
when i try change kernel with button 6 and 4 press when start .. kernel change 64 bit..
in my mind os x lion kernel aways run 64 bit ...

why my kernel stay 32 bit after update ? anyone know ?
thanks..

 

[webjprgm]

32 vs 64 bit kernel

Maybe Apple has a list on their web site of which machines will boot to 64-bit by default. I also would expect a 2010 model to be on the 64-bit list.

A work-around is to add "arch=x86_64" to your boot args, which is basically like holding 6 and 4 at boot. You can do this by going to Terminal and running this command:

sudo nvram boot-args="arch=x86_64"

I've only found an article from Snow Leopard about which machines boot to the 64-bit kernel by default. Note that you can run 64-bit apps from the 32-bit kernel if you have a 64-bit processor.

http://support.apple.com/kb/HT3770

 

[Danielxc]

Maybe Apple has a list on their web site of which machines will boot to 64-bit by default. I also would expect a 2010 model to be on the 64-bit list.

A work-around is to add "arch=x86_64" to your boot args, which is basically like holding 6 and 4 at boot. You can do this by going to Terminal and running this command:

sudo nvram boot-args="arch=x86_64"

I've only found an article from Snow Leopard about which machines boot to the 64-bit kernel by default. Note that you can run 64-bit apps from the 32-bit kernel if you have a 64-bit processor.

http://support.apple.com/kb/HT3770

thanks..