Forums
New posts
Articles
Product Reviews
Policies
FAQ
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Menu
Log in
Register
Install the app
Install
Forums
Apple Computing Products:
macOS - Operating System
64-bit and Snow Leopard – What 64-bit means for you
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="vansmith" data-source="post: 896680" data-attributes="member: 71075"><p>Very true and good point. As stated in <a href="http://www.osnews.com/story/22009/Snow_Leopard_Seeds_Use_32bit_Kernel_Drivers_by_Default" target="_blank">this</a> OSNews article, the fact that you have a 32-bit EFI does limit you to booting into a 32-bit kernel despite the fact that this is an artificial limitation. If you want to check whether you have a 32-bit or 64-bit EFI, execute the following command (again, thanks to that OSNews article) in the Terminal (/Applications/Utilities):[CODE]ioreg -l -p IODeviceTree | grep firmware-abi[/CODE]On my early 2008 MB, that command returns the following: | | "firmware-abi" = <"EFI64">. From this, I can see that I have a 64-bit EFI as denoted by the EFI64 at the end of that result. If you see EFI32, you have a 32-bit EFI. That said, that article states that on MacBooks, it is irrelevant if you have a 32-bit or 64-bit EFI - you will only be able to boot into a 32-bit kernel (again, artificial limitation imposed by Apple). I don't have SL yet - anyone tested this?</p></blockquote><p></p>
[QUOTE="vansmith, post: 896680, member: 71075"] Very true and good point. As stated in [URL="http://www.osnews.com/story/22009/Snow_Leopard_Seeds_Use_32bit_Kernel_Drivers_by_Default"]this[/URL] OSNews article, the fact that you have a 32-bit EFI does limit you to booting into a 32-bit kernel despite the fact that this is an artificial limitation. If you want to check whether you have a 32-bit or 64-bit EFI, execute the following command (again, thanks to that OSNews article) in the Terminal (/Applications/Utilities):[CODE]ioreg -l -p IODeviceTree | grep firmware-abi[/CODE]On my early 2008 MB, that command returns the following: | | "firmware-abi" = <"EFI64">. From this, I can see that I have a 64-bit EFI as denoted by the EFI64 at the end of that result. If you see EFI32, you have a 32-bit EFI. That said, that article states that on MacBooks, it is irrelevant if you have a 32-bit or 64-bit EFI - you will only be able to boot into a 32-bit kernel (again, artificial limitation imposed by Apple). I don't have SL yet - anyone tested this? [/QUOTE]
Verification
Post reply
Forums
Apple Computing Products:
macOS - Operating System
64-bit and Snow Leopard – What 64-bit means for you
Top