6GB in MacBook (Pro); Yes it works. - 8GB... well...

[InDaMode]

ok I used Disk Utility / Verify and there was indeed a problem with the HD, something to do with the "Volume Header." So I backed up important data and used the Repair function. Everything seems fine now.

When I originally cloned the HD and then fitted it in the MacBook, the system was up and running so I assumed the cloning process had worked. I didn't think to check the disk for glitches. So I'm glad I mentioned it here and I'm glad you suggested there may be a problem with the HD.

Many thanks!

 

[jbyun04]

so sorry for being redundant but just so i'm crystal clear..

my MBP 15" is from Mid 2009. I can run 8GB (2x4) or 6GB (4 & 2) without any problems?

I have 4GB right now, is it worth it and/or would there be any problems if I were to enable 64Bit Kernal by doing that hold down 6 and 4 while restarting?

 

[LedCop]

ok I used Disk Utility / Verify and there was indeed a problem with the HD, something to do with the "Volume Header." So I backed up important data and used the Repair function. Everything seems fine now.

When I originally cloned the HD and then fitted it in the MacBook, the system was up and running so I assumed the cloning process had worked. I didn't think to check the disk for glitches. So I'm glad I mentioned it here and I'm glad you suggested there may be a problem with the HD.

Many thanks!

Ah, glad everything worked out well for you! And so easily at that!

You're very welcome though I don't think I did much at all.

 

[LedCop]

so sorry for being redundant but just so i'm crystal clear..

my MBP 15" is from Mid 2009. I can run 8GB (2x4) or 6GB (4 & 2) without any problems?

I have 4GB right now, is it worth it and/or would there be any problems if I were to enable 64Bit Kernal by doing that hold down 6 and 4 while restarting?

8GB (2x4) or 6GB (4 & 2) will pose no problems for you.

I haven't tried the 64bit kernel so I can't say anything for that I'm afraid.

 

[Nijruo]

This guide is ****ing confusing. First it says my A1260 (for extreme clarification, that is a 2.4GHz 15-inch "discrete" early (February) 2008 MacBook Pro 4,1) can address 8GB of RAM, then tells me only 6GB.

EDIT: okay, if someone could give me an answer to this considering all the different variables:

• Early '08 15" MacBook Pro
• Snow Leopard 10.6.3
• 64-bit kernel and extensions enabled
• Win7 Pro 64-bit partition installed as well

Q. Can I install 8GB of RAM and have it address that memory without issue?

 

[Cave Man]

This guide is ****ing confusing. First it says my A1260 (for extreme clarification, that is a 2.4GHz 15-inch "discrete" early (February) 2008 MacBook Pro 4,1) can address 8GB of RAM, then tells me only 6GB.

EDIT: okay, if someone could give me an answer to this considering all the different variables:

• Early '08 15" MacBook Pro
• Snow Leopard 10.6.3
• 64-bit kernel and extensions enabled
• Win7 Pro 64-bit partition installed as well

Q. Can I install 8GB of RAM and have it address that memory without issue?

You appear to have a 4,1 which can only take 6 gb of RAM. See OWC for info.

 

[benrockwood]

How about umb 15" 2.4ghz.. does it support 8gb ?

Ben

 

[ayeying]

This guide is ****ing confusing. First it says my A1260 (for extreme clarification, that is a 2.4GHz 15-inch "discrete" early (February) 2008 MacBook Pro 4,1) can address 8GB of RAM, then tells me only 6GB.

EDIT: okay, if someone could give me an answer to this considering all the different variables:

• Early '08 15" MacBook Pro
• Snow Leopard 10.6.3
• 64-bit kernel and extensions enabled
• Win7 Pro 64-bit partition installed as well

Q. Can I install 8GB of RAM and have it address that memory without issue?

If you've read the first post, it says clearly:

How do I know when my MacBook Pro was purchased?
- Read this: http://guides.macrumors.com/MacBook_Pro
If you fall into Rev D or Rev E specs (or Unibody MacBook Pro 15"), you can support up to 6GB w/o problems. 8GB is only allowed on the Unibody MacBook Pro 17" currently.

How about umb 15" 2.4ghz.. does it support 8gb ?

Ben

No. 6GB

 

[mathov]

problem with 8go

hello
now i have problem with macbook pro Early 2008 i upgrade ram with 8go de ram and after few minute the macbook pro screen freeze i dont know why i try 6go and freeze too but with my macbook pro 15 same years 6go is ok no freeze etc

Anybody have a idea?

 

[ayeying]

hello
now i have problem with macbook pro Early 2008 i upgrade ram with 8go de ram and after few minute the macbook pro screen freeze i dont know why i try 6go and freeze too but with my macbook pro 15 same years 6go is ok no freeze etc

Anybody have a idea?

8 GB won't work.

Try putting the 4GB module in another slot.

 

[mathov]

8gb

thank for reply i try with 6giga but he freeze too so i replace my 2giga and 1giga but now i have kernel panic my macbook pro work only with 2gb now

 

[MaxUbiquitous]

For diagnosing hard disk problems try this program:

Ah, I see. I guess what you're experiencing can be consistent with a hard disk issue. It's possible that you got a dud hard disk.

X-Bench, which you can get at http://www.xbench.com/ is a Mac benchmark tool which includes tests for the hard disk.

And good idea on using the process of elimination on your own and a friend's Mac even though I imagine it can be a big pain to swap hard disks.

You're very welcome and too kind; I wish I was of bigger help.

http://www.volitans-software.com/smart_utility.php

 

[MaxUbiquitous]

i know it's 6gb but..

So, I know my late 2008 UMBP 2.4 15" isn't supposed to be able to handle 8GB of RAM, but..

has there been any changes to this recently? i.e. when running Snow Leopard with 64bit efi/kernel/os enabled, or is it still 6GB?

Cause the weird thing is, it boots up fine with 8gb installed, sys profiler recognizes it, and it seems to use up the whole 8gb ( to test I opened 3 user accounts, and in each opened up every application/utility on my HDD (side note, isn't that awesome, that was like 100-200 open applications and the mac os still didn't crash )

so am i just being hopeful or is it possible that 8GB could work under the right setup?

 

[DoFoT9]

So, I know my late 2008 UMBP 2.4 15" isn't supposed to be able to handle 8GB of RAM, but..

has there been any changes to this recently? i.e. when running Snow Leopard with 64bit efi/kernel/os enabled, or is it still 6GB?

the limitation is a HARDWARE limitation not a SOFTWARE limitation. it cannot be fixed.

 

[MaxUbiquitous]

weird that it sees the 8g, not like the old core duo's that wouldn't boot with more than 2 in 'em..

 

[FCPK]

Mmmm, I see revD and revE are mentionned as working fine with 6GB in the original post, but does anyone what are(if any) the issues if one puts 6GB in a revC?
That's the 2.33Ghz core 2 duo with the ATI Mobility Radeon X1600.
I don't mind upgrading to 10.6 for that.

 

[leeyuentuen]

I have:
Macbook Pro Unibody Late 2008 (A1286, 2.4GHZ)
and i can confirm that 8GB works on my macbook pro.

information see following link
http://leeyuentuen.hostei. com/?p=1616#more-1616 (no space between the url)

 

[yishiang]

I have:
Macbook Pro Unibody Late 2008 (A1286, 2.4GHZ)
and i can confirm that 8GB works on my macbook pro.

information see following link
http://leeyuentuen.hostei. com/?p=1616#more-1616 (no space between the url)

Good to hear that, but I ended up buying the 4GB+2GB, as I do not want to be left with a 4Gb stick if its not compatible and I can't return it since the RAM it self is not broken.

So far with 6GB has been very stable, no kernel panics after upgrading.

 

[benrockwood]

Yes.. It works

So, I know my late 2008 UMBP 2.4 15" isn't supposed to be able to handle 8GB of RAM, but..

has there been any changes to this recently? i.e. when running Snow Leopard with 64bit efi/kernel/os enabled, or is it still 6GB?

Cause the weird thing is, it boots up fine with 8gb installed, sys profiler recognizes it, and it seems to use up the whole 8gb ( to test I opened 3 user accounts, and in each opened up every application/utility on my HDD (side note, isn't that awesome, that was like 100-200 open applications and the mac os still didn't crash )

so am i just being hopeful or is it possible that 8GB could work under the right setup?

I have UMBP 2008 2.4ghz and i can confirm that 8GB works on SL with 64bit mode without any issues. I bought my 8GB from OWC for $250 and i think now they are selling it for $229

-Ben

 

[leeyuentuen]

So, I know my late 2008 UMBP 2.4 15" isn't supposed to be able to handle 8GB of RAM, but..

has there been any changes to this recently? i.e. when running Snow Leopard with 64bit efi/kernel/os enabled, or is it still 6GB?

Cause the weird thing is, it boots up fine with 8gb installed, sys profiler recognizes it, and it seems to use up the whole 8gb ( to test I opened 3 user accounts, and in each opened up every application/utility on my HDD (side note, isn't that awesome, that was like 100-200 open applications and the mac os still didn't crash )

so am i just being hopeful or is it possible that 8GB could work under the right setup?

I have test on my macbook using stresstest tool. without any problem

 

[RedneckBob]

I have UMBP 2008 2.4ghz and i can confirm that 8GB works on SL with 64bit mode without any issues. I bought my 8GB from OWC for $250 and i think now they are selling it for $229

-Ben

I too can confirm this as I have 8G installed and running on a UniBody 2.4G (MB470LL) MacBookPro5,1 (http://support.apple.com/kb/SP499).

 

[iLog.Genius]

This is awesome news for those with first generation unibodies. I wonder what has changed from 10.5 to 10.6 (if any thing or applicable) that allows users to use 8GB of RAM with no problems knowing that a few had nothing but problems trying to use 8GB of RAM.

 

[RedneckBob]

And, it appears as if the full 8G is entirely functional.

 

[Cave Man]

I too can confirm this as I have 8G installed and running on a UniBody 2.4G (MB470LL) MacBookPro5,1 (http://support.apple.com/kb/SP499).

And, it appears as if the full 8G is entirely functional.

You don't know for sure until you try using the RAM. Just because the whole 8 gb is visible in a computer doesn't mean it's all accessible. With that said, all unibody MBP should address 8 gb except:

• MacBook Pro 15" 2.4GHz (All)
• MacBook Pro 15" 2.53GHz model w/ExpressCard Slot (Late 2008)
• MacBook Pro 15" 2.8GHz model w/ExpressCard Slot (Late 2008)

These three can only access 6 gb of RAM without problems.

 

[RedneckBob]

You don't know for sure until you try using the RAM. Just because the whole 8 gb is visible in a computer doesn't mean it's all accessible. With that said, all unibody MBP should address 8 gb except:

• MacBook Pro 15" 2.4GHz (All)
• MacBook Pro 15" 2.53GHz model w/ExpressCard Slot (Late 2008)
• MacBook Pro 15" 2.8GHz model w/ExpressCard Slot (Late 2008)

These three can only access 6 gb of RAM without problems.

Any suggestions on how to use the full 8G? I launched multiple VMs and just about every single program on my system until "Used" in the Activity Monitor read "7.99G" and swap grew from basically no usage all the way out to 1.24G.