How Do I Downgrade to 10.6.4?

Discussion in 'macOS' started by Yamcha, Nov 18, 2010.

  1. Yamcha macrumors 68000

    Joined:
    Mar 6, 2008
    #1
    Hi Guys,

    I need to downgrade to 10.6.4, anyone know how I can do this? =/ Its driving me nuts I can't find anything on it online..

    Appreciate your help :)
     
  2. Yamcha thread starter macrumors 68000

    Joined:
    Mar 6, 2008
  3. spinnerlys Guest

    spinnerlys

    Joined:
    Sep 7, 2008
    Location:
    forlod bygningen
    #4
    Nope. But if you find one, be sure to post it here.

    MRoogle is a good tool to search these fora for already existing threads about the same issue and may solve your problem.
     
  4. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #5
    As spinnerlys posted, the only way to downgrade is reinstall the OS.
     
  5. merlin macrumors newbie

    Joined:
    Nov 27, 2003
    #6
    Me too!

    I was wondering if it was possible to downgrade through Time Machine. I haven't upgraded to 10.5 figuring everything seems to be working well on my recently purchased 12-Core, so why tempt the fates. I also use Pro Tools HD, which can be very picky about system software. It's also working fine. Any PT users out there that have upgraded with or without problems (oops, I suppose I should have said "issues.";)!)?
     
  6. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #7
    Downgrading by TM is possible but its in effect reloading the operating system. You boot off the install CD, select boot Time Machine restore and wait, wait, wait and wait. I did this once and it took well over 8 hours to restore 200 gigs worth of data.
     
  7. lapocompris macrumors regular

    Joined:
    Jun 26, 2009
    #8
    Boot with a Snow Leopard retail DVD, select to install only "the essentials", it'll bring you back to 10.6.0 while preserving all your data and application
     
  8. spinnerlys Guest

    spinnerlys

    Joined:
    Sep 7, 2008
    Location:
    forlod bygningen
    #9
    The OP has an 21.5" iMac, which was released in 10/2009 and came with Mac OS X 10.6.1, I think it was a special build even. Therefore using a Retail version of Mac OS X 10.6.0 will not work, but the grey Restore DVDs will do, though it will keep the system as it was including the updates.
    I once did a reinstall of Mac OS X 10.6 using a 10.6.0 Retail DVD on a Mac with 10.6.3, and after the installation 10.6.3 was still on that machine. One needs to do a Clean Install of OS X 10.6 Snow Leopard to properly downgrade, but I think it has been mentioned already.
     

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