Comments on: Mac OS X 10.6 “Snow Leopard”: In Our Hands August 28!

By: Robert Riccomi

Robert Riccomi — Wed, 07 Oct 2009 05:47:21 +0000

I have a Macbook 5,1 Unibody Serial No. W8842EDE1AQ
I installed Snow Leopard 10.6.1
I will not change to 64bit mode (held down 6 4 while booting both from scratch and after shutting down and restarting.

Checked EFI as suggested. It reported EFI64??????????

By: Robert Riccomi

Robert Riccomi — Wed, 07 Oct 2009 01:47:21 +0000

Checked EFI as suggested. It reported EFI64??????????

By: Holger Frohloff

Holger Frohloff — Tue, 08 Sep 2009 19:32:43 +0000

Hi Stephen,
just used the terminal to check and it seems as though I can run with complete 64bit support.
Here are some infos about my MBP:
Modellname: MacBook Pro, MacBookPro4,1, Intel Core 2 Duo, 2.4 GHz
L2-Cache: 3 MB
RAM: 2 GB
Bus: 800 MHz
I bought it in August 2008.

By: yeshes

yeshes — Thu, 03 Sep 2009 16:17:16 +0000

my early 2008 macbook pro (penryn) has EFI64

By: Name

Name — Thu, 03 Sep 2009 15:21:43 +0000

My 2008 black MacBook has a 64 bit efi, does that mean it will run in 64 bit? This seems to contradict what the table says regarding 64 bit support.

By: Antonio Malcolm

Antonio Malcolm — Mon, 31 Aug 2009 23:40:26 +0000

to edit my above comment- ah, nevermind. I just read your latest entry, and better understand what you're talking about with the 64-bit support.
I do think we'll see it though, on the Santa Rosa models. There's nothing to keep them from supporting, as the hardware and firmware is there.

By: Antonio Malcolm

Antonio Malcolm — Mon, 31 Aug 2009 23:31:49 +0000

The 2007-2008 Nvidia-equipped MacBook Pros (Santa Rosa) are 64-bit, have 64-bit EFI, and are supported as such by Apple, so you may want to edit your chart.

*MacBook Pro (Nvidia graphics) from 2007-early 2008

In case you're curious, they're also supported for OpenCL. The 8600s are also H.264-capable, so I'm not sure why we don't get that with Quicktime yet. Maybe it's a driver issue of some sort?

By: Emacsi

Emacsi — Mon, 31 Aug 2009 20:43:43 +0000

I have MacBook white (2009-present) and Mac Mini (2009) and they have both 64bit EFI.
Thank you!

By: loris

loris — Sun, 30 Aug 2009 22:20:23 +0000

Nome modello: MacBook Pro
Identificatore modello: MacBookPro3,1
Nome processore: Intel Core 2 Duo
Velocità processore: 2.4 GHz
Numero di processori: 1
Numero totale di nuclei: 2
Cache L2: 4 MB
Memoria: 4 GB
Velocità bus: 800 MHz
Versione Boot ROM: MBP31.0070.B07
Version SMC (sistema): 1.16f11

from terminal window:
MacBook-Pro:~ user$ ioreg -l -p IODeviceTree | grep firmware-abi
| | “firmware-abi” = <”EFI64″>

By: raymondcranfill

raymondcranfill — Sun, 30 Aug 2009 21:32:05 +0000

The Unibody Macbook, at least the late 2008 model, DOES include a 64-bit EFI. Note, this was the last model produced (no Firewire 800, SSD Slot) prior to the release of the MacBook Pro 13″.

What I wonder, however, is why the 2007 iMac is hobbled with a 32-EFI. The T7400 Core2Duo chip is fully 64-bit capable. It seems like something Sony would pull.