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Downgrade to Snow Leopard

1923 Views 72 Replies Latest reply: Feb 9, 2013 2:15 PM by stevejobsfan0123 RSS
  • OGELTHORPE Level 7 Level 7 (22,410 points)
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    Feb 9, 2013 5:42 AM (in response to oxcart)

    I have a late 2011 17" MBP with Snow Leopard installed on it.  If the version is 10.6 8, you should be able to install it via cloning.

     

    Ciao

  • babowa Level 7 Level 7 (22,020 points)
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    Feb 9, 2013 8:46 AM (in response to oxcart)

    I would not count on it being able to boot with SL. Depending on when it was released and which build it has, it may or may not - the general rule is and has always been: you cannot boot a Mac with an OS version earlier than what it came with. Here is a list of builds and the OS they had installed:

     

    http://support.apple.com/kb/HT1159

  • MlchaelLAX Level 4 Level 4 (1,530 points)
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    Feb 9, 2013 9:04 AM (in response to oxcart)

    oxcart wrote:

     

    That might depend where you live.  The HMV record store here in Oxford had a larger than life model of the dog and gramaphone in the window, and I kind of assumed that they all had it.  Not for much longer though, as they just went bankrupt.  Anyway, nice Avatar.

    Thank you!

     

    Yes, it my recents visits to London, it was nice to see Nipper still in use by HMV (His Master's Voice) - a retail record (CD) chain in Europe. He was originally shared by five separate international companies, four of which have in one way or another, abandoned him!

     

    I am sorry to hear they have financial troubles and may spell the end of Nipper (at least outside of California!)

  • seventy one Level 6 Level 6 (8,455 points)
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    Feb 9, 2013 9:03 AM (in response to MlchaelLAX)

    Make them an offer for the items in the Oxford window, Michael.  They're bankrupt, they need the money ... and you could have a larger than life companion at the bottom of your bed!

  • MlchaelLAX Level 4 Level 4 (1,530 points)
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    Feb 9, 2013 9:06 AM (in response to seventy one)

    That is an interesting suggestion. But not for the reason you suggest...

  • MlchaelLAX Level 4 Level 4 (1,530 points)
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    Feb 9, 2013 9:12 AM (in response to oxcart)

    oxcart wrote:

     

    Hi Guys,  Since we have this thread going I would be grateful for another piece of info.  I am looking at a refurbed MBP but the earliest I can find is October 2011.

    I suggested in an earlier post, a link to how to make a 10.6.7 version of the Install DVD, although I have never tried it.

  • OGELTHORPE Level 7 Level 7 (22,410 points)
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    Feb 9, 2013 9:10 AM (in response to babowa)

    Baboawa, greetings:  You cannot use a retail disk and install it in a late 20011 MBP.  If you have a MBP that came with Snow Leopard or earlier, you can install 10.6 .? and then update it to 10.6.8.  Clone that to an external HDD and it will boot a late 2011 MBP.  Then you can copy to the internal HDD of the 2011 MBP.  That is how I installed it on my 2011 MBP.

     

    If the OP uses this process, I am willing to wager that it will work.

     

    Ciao.

  • MlchaelLAX Level 4 Level 4 (1,530 points)
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    Feb 9, 2013 9:15 AM (in response to OGELTHORPE)

    OGELTHORPE wrote:

     

    Clone that to an external HDD and it will boot a late 2011 MBP.

    Can this method be transfered to a flash drive for OP's portable use to test the MBP in question (by attempting to boot it from the flash drive), before he purchases it?  How big of a flash drive does he need?  I am guessing 16GB just after the update to 10.6.8 and before any other applications are installed.

  • babowa Level 7 Level 7 (22,020 points)
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    Feb 9, 2013 9:43 AM (in response to OGELTHORPE)

    Yes, of course I know you can install Snow Leopard if it originally came with that. However, chances are, that a late 2011 MBP  did not come with Snow Leopard installed.

  • OGELTHORPE Level 7 Level 7 (22,410 points)
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    Feb 9, 2013 10:17 AM (in response to MlchaelLAX)

    MichaelLax, greetings; Please keep this premise in mind: A late 2011 MBP will only allow 10.6 to be installed is if it has been updated to 10.6.8.

     

    One could use a USB drive to install the OS but there is a practical issue to be considered.  If you just want the 10.6.8 OS, then you have to delete all of the other data on the source HDD.  If you want to transfer all of the data, then the USB must be large enough to accommodate all of the data.  If you erase the user data, then you should be able to calculate the size of the USB thumb drive.  (This does not make an install USB.  That is another proposition.)

     

    Just prior to this response I took a HDD that has 3 partitions, one with 10.6.8, one with 10.5 and one with 10.4.  I connected it to the late 2011 MBP and the 10.6.8 booted as expected.  When I tried 10.5, the MBP vomited.

     

    All you have to do is use Disk Utility>Restore to transfer the OS and the data.

     

    Ciao.

  • OGELTHORPE Level 7 Level 7 (22,410 points)
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    Feb 9, 2013 10:21 AM (in response to babowa)

    Babaowa, greetings:  My late 2011 MBP came with Lion installed.  That was not a 'show stopper'.  Please understand that my proboscis is now so large I cannot afford to lie.

     

    Ciao.

  • babowa Level 7 Level 7 (22,020 points)
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    Feb 9, 2013 10:29 AM (in response to OGELTHORPE)

    Interesting, thanks. I had heard that some machines were capable of booting with Snow Leopard depending on exactly when they were manufactured. Obviously you were lucky since yours is one of those.

  • noondaywitch Level 6 Level 6 (8,130 points)
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    Feb 9, 2013 10:47 AM (in response to babowa)

    a brody's usertip; https://discussions.apple.com/docs/DOC-2455#SnowLion

    details which Macs can run SL. Scroll to last section.

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