OS X 10.8 Mountain Lion System Requirements

Feb 16, 2012 - 96 Comments

OS X Mountain Lion System Requirements

With every new version of Mac OS X comes new system requirements, and as expected a few machines are getting cut from the list of compatible Macs. The newer the Mac the better, but here is what we know so far about system requirements for OS X 10.8:

Basic System Requirements for OS X Mountain Lion:

  • 64-Bit Intel Core 2 Duo processor or better required
  • Ability to boot into OS X 64-bit kernel
  • Advanced GPU chipset required
  • Internet connection required to download and install OS X 10.8

You can check for 64 bit kernel boot suport by typing “uname -a” at the command line, launch the Terminal to do this. The uname -a command will return something like this:

Darwin MacBookAir 11.2.0 Darwin Kernel Version 11.2.0: Tue Aug 9 20:54:00 PDT 2011; root:xnu-1699.24.8~1/RELEASE_X86_64 x86_64

Look for “x86_64” to verify that a Mac is booting into a 64 bit kernel. This will happen by default with most OS X Lion compatible Macs, but Snow Leopard users won’t necessarily boot into the 64 bit kernel by default and will have to verify compatibility with the list of hardware below.

Macs that will support OS X 10.8 Mountain Lion

As usual, the newer the Mac the better:

  • MacBook Pro – 13″ from mid 2009 or later, 15″ from late 2007 and newer, 17″ from late 2007 and newer
  • MacBook Air – late 2008 and newer
  • iMac – models from mid 2007 and newer
  • MacBook – 13″ aluminum from 2008, 13″ from 2009 and newer
  • Mac Mini – early 2009 and newer
  • Mac Pro – early 2008 models and newer
  • XServe – early 2009 models and newer

Macs that are NOT expected to support OS X Mountain Lion

Older Macs and those with weaker GPU’s will likely be left behind:

  • Anything with an Intel GMA 950 or x3100 integrated graphics card
  • Anything with an ATI Radeon X1600
  • MacBook models released prior to 2008
  • Mac Mini released prior to 2007
  • iMac models released prior to 2007
  • Original MacBook Air

This list of compatible and incompatible Macs and system requirements are based off of the first OS X Mountain Lion Developer Preview and may be subject to change, we will update when we learn more about the specifics. OS X Mountain Lion will be released this summer but presumably long before that we will know precise system requirements and what Macs are and are not supported by the new version of OS X. Stay tuned.

Thanks again Daryl


Related articles:

Posted by: Paul Horowitz in Mac, Mac OS, Troubleshooting


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  1. […] Mavericks-compatible Mac hardware, it should be noted the initial list matches the supported list from 10.8 identically, and it could change by the time the final version […]

  2. shane says:

    10.7 is pretty solid and will run on some macs that don’t make the cut. Just depends what your computing requirements are and how much of an apple fanboy you feel you need to be.

  3. waseem says:

    i have pc of intel core 2 due 1.86 GH processor with 2 gb ddr2 ram what latest version of MAC OS i can instal ON my PC

  4. […] build dates are used to determine compatibility and system requirements for OS X upgrades like Mountain Lion, support for specific features like AirPlay, and even to determine eligibility for the rare recall […]

  5. S. Bindman says:

    I’m not that happy with Mountain Lion.
    I skipped from Leopard to Mountain Lion.
    To be fair, I don’t own an Ipad, IPod, IPhone, or any other Apple Product aside from my 27″ IMac 3.06 Dual Core with 4 GB Ram.

    1. I’m not a technophile.All I see are “superficial changes” on my working window.

    2. It took 4 1/2 hours to download, install and restart. I have a fast ISP provider!

    3. Not all programs work instantly. I had to go to XQuartz to add a “FIX” to GIMP (A Free Photo-Editing Software) which for some strange reason seems to now be my default program whenever I open up any Raw file!

    4. Changes that I might have liked to see are not there – e.g. how files appear

    So if someone can please explain what I don;t see, I’d appreciate that.



  6. fox says:

    >Reason why older Macbooks can’t use 10.8? $$$$$’s. Apple is like EXXON, >out for profit, customers can go to Hell.

    That why apple suxx

  7. […] Mac Pro – early 2008 models and newer […]

  8. Tom Callahan says:

    Reason why older Macbooks can’t use 10.8? $$$$$’s. Apple is like EXXON, out for profit, customers can go to Hell.

  9. […] things considered, the system requirements for OS X Mountain Lion are fairly light, but there are some Core 2 Duo Macs that lose support and […]

  10. AKASH BOPPANA says:

    why does it would not install in 32 bit version!
    pls try to give any answers to my questions.

  11. […] Take that information and compare it to the following list of Macs, which mirrors the preliminary system requirements for 10.8 almost […]

  12. […] that OS X Mountain Lion would be released this July at a price of $19.99. Anyone who meets the system requirements will be able to update to Mac OS X 10.8 from Lion or even from Snow Leopard. […]

  13. robert1014 says:

    I have a 2007 Mac Pro, still running Snow Leopard. I’ve heard this model may not support Mountain Lion, (although some here assert it will). Assuming it won’t…I wonder if Lion will still be available to purchase from the App Store when Mountain Lion is released? I’ll probably want to upgrade at least to Lion, if I won’t be able to upgrade to Mountain Lion, but, this close to release, I’m trying to hedge my bets and not have to purchase Lion AND then Mountain Lion.

    • Tom Callahan says:

      Hey, they, Apple that is disappointed Wall Street with quarterly profits of 30+ billion. Guess they hope to make W S happy by forcing people who want the latest upgrades to bin their 5 year old laptops for the newest and greatest. I have a 10 year old MS desk top which will support WIN 8 for God’s sake, not that I’m a MS fan but at least they take their customer base into account with their upgrades.

    • Mark says:

      I have a late 2006 Intel iMac and I just purchased Snow Leopard on eBay and successfully upgraded to it. My plan was to then upgrade to Lion (the latest version that my machine is capable of running) at the App Store, but I see that it is no longer available. I guess I am out of luck and will have to stick with Snow Leopard for the rest of the life of this machine.

  14. karthik says:

    is that possible to upgrade the mac operating system in windows machine any knows please guide me how to install the OS

  15. Wiley207 says:

    Though it doesn’t say, I’m almost sure my early 2009 polycarbonate MacBook may be able to handle Mountain Lion. It has an NVIDIA GeForce 9400M graphics chip and the ability to boot with that 64-bit kernel thing.

  16. Robert Williams says:

    For all those people telling you to buy a new machine. Get real. Life expectancy is getting longer and product use expectancy is getting shorter. It is Apple that is preaching how they care about the environment and just because it is recyclable does not mean they don’t end up in land fills. Now if I buy a $700 PC I get a short life span but not for a 6K computer. And your comparison with a moving part hard drive is just nonsense. We buy a 4k to 8k computer to make it easy to replace those parts but not the main machine. It would be just as easy for apple to make ML work on older makes but they want to make people update their notebooks sucking Mac Pro users into the hole. Didn’t apple just report how much money they have now yet their products are still so WAY over priced. Way back when PC first entered the user market, their prices dropped as their sales increased but apple just pocketed all the money. One could argue that it is a conflict of interest making OS and selling the only computers that run them. Back in the 80’s apple cried to the Justice Department about MS tight integration of IE into its OS and look at them now. Oh Steve Chump and Apple have learned very well from MS how to become tyrant. they have surpassed them.

  17. dust says:

    my hackintosh install mountain lion DP perfect, im sure there are ways to let it install, on “real” mac hardware, as long it can boot in 64bit of course

  18. Thomcarl says:

    One of my Macs (early 2008 MacBook with Intel 3100 GPU Won’t be supported by Mountain lion. I purchased a used MacBook Pro mid 2009 13 inch to keep my network current. My “old” MacBook is a the local Apple reseller for sale, the new to me 2009 MacBook Pro is a sweet little machine, but the one I’m selling was also a sweet little note book and like a lot of people I’m a little pissed at Apple about the whole thing. It’s only a couple of hundred bucks that I have to dig up to make the swap, and for me thats not a problem, however having to sell a perfectly good lap top, thats not even 4 years old is frankly a bunch of crap. I don’t think that Apple really needs the money but mountain lion better kick butt after all the BS that Apple is put some of its oldest customers thru. I’ve been a Mac head since 1989 and this is the first time I’ve been this up-set.

  19. stp says:

    This really stinks that apple is killing all these machines even mac pros not all of us are made of money i have a used macbook and macpro and now apple wants to make them absolete this is not good even some 2010 models will not work. Apple really sucks with this new OS its been down hill since mountain lion I might go back to PCs if apple keeps this up I have been a mac user since 1994.

  20. Savannah says:

    Mine also came back saying
    “Darwin Kernel Version 10.8.0: Tue Jun 7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386 i386”
    followed by some more jargon numbers.
    What in the world does this mean?? Help!

  21. redion says:

    hey guys can i install this os on my pc ? my pc have :
    2 GB RAM
    Nvidia GeForce 8400 GS
    220 HDD
    Processor AMD sempron 2100 1.81 GHZ !

    Tell me can i install it on my computer or not :/

    • NOpe says:

      I’ve never heard of a Mac that uses an AMD processor, so no.

      • Bob says:

        Hackintosh, obviously….. lol would probably work eventually man but you’d have to be pretty stupid to install pre-release software on an already unstable platform that most hackintoshes are anyway.

  22. […] I have added this last column because in the case of OS X Mountain Lion many old Macs are not supported partly because of the old graphic chipset used. […]

  23. ARMDN says:

    Ok guys! Here is the things!

    1# Apple Noted that DP2 still has a problem “32-bit Kernel Extensions is unsupported”, so if this a problem, then Apple will solve this problem eventually during development. 32-bit kernel extensions works ONLY with 32-bit kernel.

    2# Almost native 64-bit kernel works if start Mac OS X from GRUB (used Ubuntu Linux 11.04).

    3# Apple Lies about that EFI32 Macs can’t load 64-bit Operational Systems. It doesn’t matter of what EFI, 32 or 64. On my Mac Pro 2007 with EFI32 works these OS: Windows Server 2008 R2 (Full 64-bit), FreeBSD 9.0 AMD64 (Full 64-bit), Ubuntu Linux 11.04 AMD64 (Full 64-bit), and now Mac OS X 10.6.8 with 64-bit kernel and extensions (for testing purposes). Tomorrow will install 10.8 DP2.

  24. […] have checked the system requirements for OS X Mountain Lion and two out of those three laptops will not be compatible […]

  25. […] Thanks for the link, I'll keep my eyes peeled. OSX 10.8 will be released summer sometime and is not expected to support the following Macs (e.g. arbitrary obsolescence forced on us by Apple):Anything with an Intel GMA 950 or x3100 […]

  26. […] Thanks for the link, I'll keep my eyes peeled. OSX 10.8 will be released summer sometime and is not expected to support the following Macs (e.g. forced arbitrary obsolescence forced on us by Apple):Anything with an Intel GMA 950 or x3100 […]

  27. Daniel Lord says:

    Well, I have a 2006+ dual 4-core (8-core) Xenon 3GHz Mac Pro with GFX already upgraded to run Motion 5 (NVIDIA GeForce 8800 GT 512 MB) and it’s booting the 32-bit kernel on Lion 10.7 as verified by ‘uname -a”: “uname -a
    Darwin DocOc.local 11.3.0 Darwin Kernel Version 11.3.0: Thu Jan 12 18:48:32 PST 2012; root:xnu-1699.24.23~1/RELEASE_I386 i386”

    So Mountain Lion won’t run unless I get it to boot the x86_64 kernel which it should be able to do. Anyone know how to configure such a system to boot in 64-bit mode?

  28. Floris says:

    I have a Mac Pro server from 2006. I am pretty sure it’s kernel is 32bit, Lion runs just fine on it but I think it will be the last OS X it will run.

    Thanks for this page. I have an iMac that is from 2009, so that one will work. However, I will now sell my Mac Pro & iMac and buy a new iMac from 2012 for mountain lion.

    Time for an upgrade :)

  29. seasalt says:

    for my macbook, what appears in terminal is this:

    10.8.0 Darwin Kernel Version 10.8.0: Tue Jun 7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386 i386

    but from that… what am I looking for to say if has the bit thing sorted, so can upgrade to lion from snowL?

  30. […] without iOS 5.1+ being on the Apple TV you will get a device error. Most Macs that match the OS X Mountain Lion system requirements should support AirPlay Mirroring, but 9to5mac has noticed that some 2010 model Macs don’t […]

  31. maurice says:

    If mountain lion does not work on a macbook 2007 2.2 core 2 duo, it will mean than buying an apple is not a good investment. Pc will become the champ. I’ve been using mac for years and i like the fact that i can buy a machine that last for a while. If they do this i will be very disappointed and will think about getting a pc for less money. This is getting like the powermac /intel transition.

    • ViNo says:

      Ok – so you have a 4 year old – perhaps even 5 year old computer by the time ML is out and you insist on having the latest OS from Apple working on it. You can continue to use Lion for probably another 2 years before Apple stops supporting Lion – so that gives you 7 years of OS support on a computer. If you were an Apple shareholder, do you think thats a good use of resources? Even hard drives do not have warranty’s past 5 years – will you insist that all hard drives should have warranties for 7 years!

      And yes, please go ahead and buy a PC and see how long that lasts in the upgrade cycle – or how much you will get for it after a month of purchase in the second hand market.

      Be reasonable and don’t be negative for the sake of it.


      • Pigi says:

        If you have a 5 years+ Windows PC, you can upgrade just parts of it, to match a new OS.

        If you have a MacBook or MacBook Pro, or even an iMac, you are going to eventually have obsolete junk, as these are not generally upgradeable apart from memory modules, unlike the Mac PC or Windows PC, which can have their internals exchanged. You pays your money and makes your choice at the initial purchase time. Tough if it doesn’t suit you.

        • Hektic says:

          Sorry to say Pigi and Vino…
          I get really confused with peoples that often refer to Apple products being unable to be upgraded… You can upgrade nearly all of them… I have a Mac Pro Desktop 2006 and it still keeps up with all of the latest pc’s I’m running Dual Quad 3.0ghz 32gb Ram an NVIDIA Quadro FX 5600 Graphics card and a SSD hard disk drive and I cannot complain that 6 years on and she is still a beast. This is one of the main computers resembling that of a pc as most of apple’s products aim to be Sleek, Stylish and most importantly innovative and COMPACT… with this in mind it does make some upgrades difficult but at the same time… It means not every tom dick and harry just rips the beasts apart and messes with the amazing framework…..
          That said by all means go back to PC and head into your local PC store for free windows support and training and tutorials… It’s all about back end support … Windows is an operating system NOT A TOTAL SOLUTION !!! I think this is where Apple nails the whole lot !

    • Baz says:

      @ All the moaners; STOP whining about it not supporting your machine; so what if it doesn’t?

      I have a 2006 Mac Pro, if it isn’t supported, it isn’t supported; what is the big issue? So I’ll miss a few bells & whistles, I am very happy to have a 5/6 year old machine that still runs the latest OS, find me a PC that could still do that 5 years on, (and you can’t generalise about modding the PC, MOST people wouldn’t know how and that’s a no-no for laptops). Geez, most people I know that have recently bought PC laptops are moaning already about them getting slower – and that’s running on the OS they were built for!

      Macs ARE a great investment, period. For the most part they are bullet-proof and uber reliable.

      2007 – 2012 is lasting for a while. You probably don’t even need to upgrade; its not like its going to make you more productive is it? And you’ll still have years left in it!

      Wait until launch day, it may work, it may not. The world won’t end because of it :0/

  32. […] When Apple released the Developer Preview of its next Mac operating system upgrade, to be called OSX Mountain Lion, I tried to install it on my 5 year-old iMac, to no avail. After searching on the web, I discovered that a number of older Mac/MacBooks will not be able to run Mountain Lion. […]

  33. […] interesting IT news of last week is probably that the next Mac OS X version will drop support for some legacy hardware. Looking back at the history of Apple we see that this is not the first time, but that the company […]

  34. Jason says:

    There is an error in the “supported” section of this article. Currently ALL MacPros are supported, 2006 and later. This post says 2008. I’ve confirmed on a Dual, Dual Core-Xenon 2006 MacPro that Mountain Lion installs just fine (developer preview) as well as others on other forums have also confirmed.

  35. Cal Lee says:

    I agree. I’m very disappointed with Apple as I’ve had such a hard time upgrading to Snow Leopard as none of the stores carry them and Apple’s support for upgrading sucks.

    SHame on you Apple. I can’t wait until a competitor comes in with a simpler operating system and steals away your market share. I’ll give you one decade more of taking advantage of your customers.

    • Jason says:

      Dude, they’re not supporting the older machines due to them having only a 32-bit kext. This is totally normal and should have been phased out long ago. Anyone who bought a 32bit machine should have known they were going to do this eventually. Nothing is going to hurt software development since it will only require 10.5 for the next 5 years or so. You will just miss out on a totally 64-bit environment. Big deal, get over it!! or buy a more modern machine.

  36. […] system requirements to insure OS X Mountain Lion […]

  37. […] oltre sarebbe opportuno verificare che la macchina su cui si andrà ad installare l’OS soddisfi i requisiti minimi richiesti.Se abbiamo già estratto il DMG di installazione di Mac OS X Mountain Lion passiamo direttamente […]

  38. […] you read the OS X Mountain Lion system requirements and got discouraged that the next version of OS X won’t support your computer, don’t […]

  39. […] con el anuncio de OS X 10.8 han vuelto a venir, a mi y a unos cuantos las dudas. Por lo que parece, ya se sabe qué Macs no serán compatibles con el león de la montañas. En principio los requerimientos (de […]

  40. Daniel S. says:

    Damn. I have the first Core 2 Duo Black Macbook from late ’06. Still runs when doing 50+ layer images on CS5. 2GB ram baby.

    • Jason says:

      People have reported on the forums that that machine is running developer preview of Mountain Lion just fine. You might be ok. The article mentions the older graphics card not supporting MT Lion, however, it should still be able to install, you just won’t get the “full effect”. If it doesn’t install out of the box, there will be a small workaround to install it once it comes out. Remember the same issue with Lion? Many that should be able to run it couldn’t out of the box, simple processor “hack” so it thinks you have what it needs allows it to run just fine. Don’t fret yet.

  41. Ernest says:

    Let me see.

    OSX 10.7 is not yet even 9 months old and we now have 10.8.

    Smells to me like Apple is becoming another Microsoft. Only in this case MS is the one being conservative, instead of reckless. I am still not happy with Lion, wished that I had stayed with Snow Leopard.

    • Jason says:

      Not considering the amount of change in the OS is minimal. Every year is a pretty standard thing for Apple now. Not to mention, it’s only $30 per upgrade. Apple is making small changes and calling it a new OS while MS makes a large OS and updates are free. It’s basically the same thing, Apple just makes less money initially and more over time. MS takes it all right up front. Neither of which i mind too much, its just different on one side then the other. Lion has some performance issues and hopefully will be fixed in MT Lion. Also, closer integration with iOS is not a bad thing. I commend the upgrade schedule, I like getting new things on a more constant basis rather than paying $400+ and waiting every 2.5/5 years (like MS).

  42. […] have internet connections. We’ll walk through the process here, but don’t forget to check OS X 10.8 system requirements for the destination Mac before […]

  43. limo says:

    What about MacBook Pro (Early 2008)?

  44. […] download the first Mountain Lion Developer Preview right now. Be sure to check the currently known system requirements as OS X 10.8 will be released in Summer of 2012 and some Macs are not going to make the list. […]

  45. […] TUAW, Cult of Mac and Mac OS X Daily […]

  46. […] X 10.8 Mountain Lion システム要件 2012年2月17日By 管理人 OS X Dailyさんより。 今回発表されたOS X 10.8 Mountain […]

  47. […] French, that Mountain Lion will not run on early Intel Macs, suggesting only those perhaps built in 2008 or later. Apple has a habit of quickly obsoleting end user investments in hardware and […]

  48. Anonymous says:

    AirPlay Mirroring seems to be limited to Intel Core i’s as of now. Although the feature has not been fully implemented according to the release notes, it doesn’t look like there’s any support at all right now for Core 2 Duo.

  49. […] 8,002 Nel tuo dovrebbe andare: OS X 10.8 Mountain Lion System Requirements […]

  50. Chris says:

    Very frustrated that Apple can’t push EFI64 to my 2006 Mac Pro Quad 3GHz machine. It’s still extremely speedy, especially with a few other updates like SSD and HD4870 or faster (since Radeons do still have EFI32 support).

    Yeah, my machine is pushing 6 years old but it cost a small fortune, runs great and is still fast. It’s strange I get better 64 bit support from Microsoft than I do from Apple.

    • K T says:

      Perhaps this can help?

    • Jason says:

      the 2006 MacPro will be supported. It’s been confirms NUMEROUS places. This article is wrong. ALL MacPros are currently supported. I’ve confirmed this on my 2006 Dual Xenon and many, many other peoples on the forums have also confirmed. Also, most all other sites aren’t even listing the MacPro on unsupported or supported since they’re ALL confirmed supported. I was pissed too in the beginning when i read everyone stating 2008+ but have since confirmed 2006+ is and most all sites are changing their “requirements”

  51. b77 says:

    I suppose I won’t be able to upgrade directly from Snow Leopard, right?

    • Paul says:

      Not sure yet, we’ll update when we know for certain.

      • Raman says:

        Even I’m using Snow Leopard now and would like to know If I can upgrade directly to Mountain Lion OS X.

        • Jason says:

          Sure you can, do a backup, format, fresh install, done :)

          This is the best way to upgrade an OS anyway. “Upgrades” often are less stable and add other issues a fresh install won’t.

          To get the best and more reliable experience. NEVER upgrade an OS always do a brand new fresh install of the new OS.

          more than half the “issues” people had with Lion were ones who’ve “upgraded” and something was left behind or didn’t transfer right.

          It’s so simple to do an OS install the right way, not reason not to.

          • Jrc1486 says:

            A lion install requires. Snow leopard.

          • Savannah says:

            Hi Jason,
            How exactly would I go about doing a fresh install? I understand the backup part (I just plug in my time machine and it automatically does that), but the formatting part I don’t understand. Please explain in more detail! Thank you!

  52. 911 says:

    Dammit, I have the 64 bit Intel Mac Pro that came out before the 2008 model, still running great, am planning on using it for another several years. Obviously a very capable machine. A bit disappointing if Mountain Lion and future updates wont run on it.. A shame if Apple makes an effort to not support the hardware to push new sales. An OS update or two certainly isn’t worth buying a new machine, this mostly just screws their customers.

    • Michael Hayes says:

      I wondered about this. The Mac Pro is 64-bit machine and the original 2006 model is still very popular. I wonder if it would be good enough to upgrade the graphics card or if they will just force them out with a firmware requirement.

      Glad I didn’t buy one when I was looking a month ago.

      • Jason says:

        2006+ are confirmed supported. It’s all good people!

        • Squishy Tia says:

          Where’s this confirmation of 2006+ support? The original Mac Pros have EFI32, and are not able to natively boot into 64-bit Kernel Mode, thus Mountain Lion will not boot.

          If something’s changed, I’d love to see the link with the details.

        • Dave says:

          Mountain Lion DP2 won’t even begin to install on my $5,000.00 8-core 64-bit 2007 Mac Pro.

          Click on the install and I get this.

          “This version of OS X 10.8 cannot be installed on this computer.”

          Thanks Apple!! Once again you have hosed me.

          • Paul says:

            Keep in mind the Developer Preview may not reflect supported hardware in the final version, we won’t know for sure until the summer.

          • Matt says:

            This is the minimum requirements off of apple.com

          • Shawn says:

            i hear ya buddy. it’s ridiculous! i am just recently getting into macs most for music recording, because audio interface drivers seem to work well with osx, but i’m starting to regret it already. i wonder if Apple ever made a macbook or macbook pro that had a working dvd drive? i got 2 macbook pro laptops and the dvd drives don’t work in either. for the price these things were new you would think they would put some decent hardware in them? these macbooks will probably end up sitting around and i’ll probably end up back on windows 7

    • Anon says:

      It appears that it is because of the Mac Pro’s GeForce 7300GT, which was in 2006-2008 Mac Pros. In short, it will probably run Mountain Lion, but may require a graphics card upgrade.

      ML betas include an EFI32 kernel, and some of the supported Macs do not run the 64-bit kernel anyways.

  53. […] Quanto ao suporte a hardwares legados, o que já transpirou é que as placas de vídeo Intel GMA x3100 ou 950 não vão mais ser suportadas, o que significa que alguns Macs hoje suportados pelo Lion não serão pelo Mountain Lion. […]

  54. Amir says:

    Model numbers that will not perform support of OS X Mountain Lion:

    • Any Intel Core 2 Duo MacBook from late 2007 – late 2008 (Model Numbers: MB061*/B, MB062*/B, MB063*/B, MB402*/A MB403*/A MB404*/A, MB402*/B)

    • The Mid-2007 Mac mini (Model Numbers: MB138*/A, MB139*/A)

    • Late 2006 polycarbonate iMac (Model Number: MA710xx/A)

    • The original early 2008 MacBook Air (Model Number: MB003LL/A)

    This list from Clut Mac Generation. Please excuse english language :) :) :)

    • Tony says:

      Is lion compatible with a 2006 on up iMac, or what is the earliest year that it would be compatible for?

      • Tony says:

        And what is the requirements?

      • jm says:

        I’m running Lion on a macbook white 2007 so I’d guess it will work on your iMac. Mountain Lion does not support this machine because the kernel is 32bit. (I didn’t realize this since I have 6GB RAM an 64bit processes show up in the task manager but trying to buy Mountain Lion in App Store gives me a message that my machine is not supported, and the “uname -a” command gives me i386 instead of x64. Too bad.)

        • pharristouchet says:

          I have the same problem. I have a white Macbook (mid 2007) with 2GB of RAM running Lion. Won’t let me download the Upgrdae due ti compatiblity. I don’t see why it can’t. Its a Core2Duo which is 64-Bit and have 2GB Ram. Could be the onboard grapghics letting it down as its only 64MB shared (256MB within Windows). Off, that it runs Windows dine, so more than capable.

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