OS 10.6 - i386 kernel

dobby · dobby #1 (**permalink**)

09-16-2009, 02:27 PM

I have just upgrade to snow leopard .
It tells me now that now running version 10.6.1
But if I give in terminal the command uname - a it says i386 that means that it is 32 bits version
And everybody told me that snow leopard is 64 bits.
Or is the branding in the kernel ?
Can anybody helps me out ?

McBie · McBie #2 (**permalink**)

09-16-2009, 02:29 PM

you need to press and hold the 6 and the 4 keys when booting OS X

By default, the 32 bit version of OS X is loaded

Cheers ... McBie

dobby · dobby #3 (**permalink**)

09-16-2009, 02:38 PM

NO it does not work .
It stills says i386

McBie · McBie #4 (**permalink**)

09-16-2009, 02:48 PM

In System Profiler, check this ....

System Software Overview:

System Version: Mac OS X 10.6.1 (10B504)
Kernel Version: Darwin 10.0.0
Boot Volume: Macintosh HD
Boot Mode: Normal
Computer Name: MDNMBP
User Name:
Secure Virtual Memory: Enabled
64-bit Kernel and Extensions: Yes
Time since boot: 5 days 2:15

Cheers ... McBie

Nethfel · Nethfel #5 (**permalink**)

09-16-2009, 02:52 PM

What Mac do you have? from what I had read on various websites, if you have a Mac that has a 32bit EFI, it will block you from loading the 64bit kernel, and that 64bit kernel couldn't be loaded on any non-pro Macbook.

It's been a long day and I don't have the links in front of me, but a quick search pulled up this here:

Startup Mode Selector

if you skip over the program information itself to further down the page, there is some description of the limitations put in place by Apple.

dobby · dobby #6 (**permalink**)

09-16-2009, 02:58 PM

64 bit kernel and extension NO
How can I change that ?

regards

I have a MAC PRO workstation 2 X intel dual core

Nethfel · Nethfel #7 (**permalink**)

09-16-2009, 03:07 PM

If you have the 2006 Mac Pro (which is what it *sounds* like you have (2xdual core xeon) then you have a 32bit efi from what I understand - otherwise - no 64bit kernel

vansmith · vansmith #8 (**permalink**)

09-16-2009, 03:09 PM

Trust me, even if you could boot into a 64-bit kernel, you don't want it. Many programs have kexts that are compiled for a 32-bit kernel and won't work with a 64-bit kernel. Unless you are doing something that explicitly needs 64-bit support, avoid it for now.

And yes, most of your applications are running as 64-bit applications. Just open up Activity Monitor and look at the "Kind" column. See link in sig for more info.

McBie · McBie #9 (**permalink**)

09-16-2009, 03:15 PM

Quote:

Originally Posted by dobby

64 bit kernel and extension NO
How can I change that ?

regards

Have a look at the link that Nethfel provided .... all the info is in there.

Cheers ... McBie

Nethfel · Nethfel #10 (**permalink**)

09-16-2009, 03:15 PM

here's a chart that a blogger put together based upon apples own data about which systems could use the 64bit kernel - and like vansmith said, it really isn't worth it - your apps that are 64bit will run in 64bit mode.

Mac OS X 10.6 “Snow Leopard”: In Our Hands August 28! – Stephen Foskett, Pack Rat

6string · 6string #11 (**permalink**)

09-16-2009, 10:26 PM

I think that this link will help you:
YouTube - Snow Leopard and 64-Bit Mode (MacMost Now 286)

dobby · dobby #12 (**permalink**)

09-17-2009, 10:17 AM

It seems that if you know the EFI of you're system is enough to determine if it can ran 64 bits ,ore not
My MAC has a EFI32 so it is the first Intel Xeon dual core , that only can run 32 bits
If somebody needs the command it is ioreg -l -p IODeviceTree | grep firmware-abi

McBie #2 (permalink)
Member Since: Apr 26, 2008 Location: Belgium Posts: 1,836 Mac Specs: 2008 MBP 17" - 10.8.2 & iPad - iOS 5.1	09-16-2009, 02:29 PM you need to press and hold the 6 and the 4 keys when booting OS X By default, the 32 bit version of OS X is loaded Cheers ... McBie " Everything should be made as simple as possible, but not one bit simpler. " A. Einstein The problem is not the problem. The problem is your attitude towards the problem. You understand ?
	QUOTE Thanks

McBie #4 (permalink)
Member Since: Apr 26, 2008 Location: Belgium Posts: 1,836 Mac Specs: 2008 MBP 17" - 10.8.2 & iPad - iOS 5.1	09-16-2009, 02:48 PM In System Profiler, check this .... System Software Overview: System Version: Mac OS X 10.6.1 (10B504) Kernel Version: Darwin 10.0.0 Boot Volume: Macintosh HD Boot Mode: Normal Computer Name: MDNMBP User Name: Secure Virtual Memory: Enabled 64-bit Kernel and Extensions: Yes Time since boot: 5 days 2:15 Cheers ... McBie " Everything should be made as simple as possible, but not one bit simpler. " A. Einstein The problem is not the problem. The problem is your attitude towards the problem. You understand ?
	QUOTE Thanks

Nethfel #5 (permalink)
Member Since: Feb 25, 2009 Posts: 2,084 Mac Specs: 2012 Non-retina MBP, 2.6GHz i7, 8GB RAM, Antiglare Screen	09-16-2009, 02:52 PM What Mac do you have? from what I had read on various websites, if you have a Mac that has a 32bit EFI, it will block you from loading the 64bit kernel, and that 64bit kernel couldn't be loaded on any non-pro Macbook. It's been a long day and I don't have the links in front of me, but a quick search pulled up this here: Startup Mode Selector if you skip over the program information itself to further down the page, there is some description of the limitations put in place by Apple. My Macs: 2012 Non-Retina 15" MBP; Mac mini G4, 1.25 GHz, 512m ram (server); Late 2011 11" MBA, 1.8GHz i7, 4Gig Ram, 256Gig SSD, HD3000; Powerbook 12" G4 1.33GHz running Debian as a server; Apple TV (1080p version)
	QUOTE Thanks

dobby #6 (permalink)
Member Since: Jul 15, 2009 Location: In front of MY MAC OR LINUX BOX Posts: 211 Mac Specs: Mac Pro Workstation Airport Extreme ATV 2 Ipad	09-16-2009, 02:58 PM 64 bit kernel and extension NO How can I change that ? regards I have a MAC PRO workstation 2 X intel dual core Last edited by D3v1L80Y; 09-16-2009 at 03:20 PM.
	QUOTE Thanks

Nethfel #7 (permalink)
Member Since: Feb 25, 2009 Posts: 2,084 Mac Specs: 2012 Non-retina MBP, 2.6GHz i7, 8GB RAM, Antiglare Screen	09-16-2009, 03:07 PM If you have the 2006 Mac Pro (which is what it sounds like you have (2xdual core xeon) then you have a 32bit efi from what I understand - otherwise - no 64bit kernel My Macs: 2012 Non-Retina 15" MBP; Mac mini G4, 1.25 GHz, 512m ram (server); Late 2011 11" MBA, 1.8GHz i7, 4Gig Ram, 256Gig SSD, HD3000; Powerbook 12" G4 1.33GHz running Debian as a server; Apple TV (1080p version)
	QUOTE Thanks

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dobby #1 (permalink)
Member Since: Jul 15, 2009 Location: In front of MY MAC OR LINUX BOX Posts: 211 Mac Specs: Mac Pro Workstation Airport Extreme ATV 2 Ipad	09-16-2009, 02:27 PM I have just upgrade to snow leopard . It tells me now that now running version 10.6.1 But if I give in terminal the command uname - a it says i386 that means that it is 32 bits version And everybody told me that snow leopard is 64 bits. Or is the branding in the kernel ? Can anybody helps me out ?
	QUOTE Thanks

vansmith #8 (permalink)
Member Since: Oct 19, 2008 Location: Ottawa Posts: 15,295 Mac Specs: 2012 13" MBP (2.5 i5, 8GB)	09-16-2009, 03:09 PM Trust me, even if you could boot into a 64-bit kernel, you don't want it. Many programs have kexts that are compiled for a 32-bit kernel and won't work with a 64-bit kernel. Unless you are doing something that explicitly needs 64-bit support, avoid it for now. And yes, most of your applications are running as 64-bit applications. Just open up Activity Monitor and look at the "Kind" column. See link in sig for more info. Important Links: Community Guidelines : Use the reputation system if you've been helped. M-F Blog :: Write for the blog :: M-F IRC Channel - Chats every Sunday at 8PM EST.
	QUOTE Thanks

Nethfel #10 (permalink)
Member Since: Feb 25, 2009 Posts: 2,084 Mac Specs: 2012 Non-retina MBP, 2.6GHz i7, 8GB RAM, Antiglare Screen	09-16-2009, 03:15 PM here's a chart that a blogger put together based upon apples own data about which systems could use the 64bit kernel - and like vansmith said, it really isn't worth it - your apps that are 64bit will run in 64bit mode. Mac OS X 10.6 “Snow Leopard”: In Our Hands August 28! – Stephen Foskett, Pack Rat My Macs: 2012 Non-Retina 15" MBP; Mac mini G4, 1.25 GHz, 512m ram (server); Late 2011 11" MBA, 1.8GHz i7, 4Gig Ram, 256Gig SSD, HD3000; Powerbook 12" G4 1.33GHz running Debian as a server; Apple TV (1080p version)
	QUOTE Thanks

6string #11 (permalink)
Member Since: Sep 09, 2009 Location: Down Under :D Posts: 5,484 Mac Specs: Back to my old 2.2GHz C2D MB after selling my MBP and wondering what my next Mac will be :)	09-16-2009, 10:26 PM I think that this link will help you: YouTube - Snow Leopard and 64-Bit Mode (MacMost Now 286)
	QUOTE Thanks

dobby #12 (permalink)
Member Since: Jul 15, 2009 Location: In front of MY MAC OR LINUX BOX Posts: 211 Mac Specs: Mac Pro Workstation Airport Extreme ATV 2 Ipad	09-17-2009, 10:17 AM It seems that if you know the EFI of you're system is enough to determine if it can ran 64 bits ,ore not My MAC has a EFI32 so it is the first Intel Xeon dual core , that only can run 32 bits If somebody needs the command it is ioreg -l -p IODeviceTree \| grep firmware-abi
	QUOTE Thanks

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