Update Mac OS Snow Leopard to OS X Mountain Lion

Discussion in 'iOS Programming' started by cthesky, Sep 2, 2012.

  1. macrumors member

    Aug 21, 2011
    Hi all,

    Before this I am developed IOS application using XCode 4.2 which run under Mac OS Snow Leopard. But now I need to use XCode 4.4.1 which required Mac OS X version 10.7.4 or later.

    So, is it possible my documents or data for example my previous developed application source code, keychain certificates, sample codes and other important data will lose after I update Mac OS to OS X Mountain Lion?

    Any comments and suggestions are welcome.

    Thanks a lot. :)
  2. macrumors 604


    Nov 26, 2007
    I had no issues upgrading.

    One thing: if you're planning on joining the Mac Dev program anytime soon, you might want to just do that now. You can get Mountain Lion + Mountain Lion Server for free if you do that. If you're just sticking to iOS for the next year though, there's no real point as the Mac Dev program costs $100/year to enroll in.
  3. thread starter macrumors member

    Aug 21, 2011
    I plan to use latest IOS and XCode to develop my new IOS application, but the latest XCode required Mac OS X version 10.7.4 or later. So, I plan to upgade the OS to Lion before install the latest IOS and XCode. Or am I doing something wrong? Or is it possible to use latest IOS on an older version of XCode?

    Thanks for your reply. :)
  4. macrumors 68000

    Jan 28, 2003
    Less lost in L.A.
    BACKUP BEFORE THE UPGRADE! At least backup your developer certificates and keychain.

    First thing to check is if you have the hardware to support ML. If so, do an upgrade straight to it, bypassing 10.7. Search for any relevant release notes regarding that jump. Then install the current version of Xcode.

    Xcode is restricted to working on certain OS X versions. For instance you can't run 4.2 on Mountain Lion. You can run 4.4.1 on Lion, but why would you if you can run Mountain Lion.

    Sure, an upgrade could corrupt your system so bad that a clean install would be required. You could loose everything. I've never seen that problem. Anyway, BACKUP.
  5. thread starter macrumors member

    Aug 21, 2011
    Thanks for your reply. I just found that my system model is quite old and unable to run Mountain Lion. My system model is MacBook 4,1 and I just do some survey found that this model still support Lion. But I cannot found any Mac OS X 10.7 Lion showed in App Store. Can I still get Mac OS X 10.7 Lion from App Store?

  6. macrumors 604


    Nov 26, 2007
    I believe your own way of upgrading to Lion at this point is by purchasing it on a key drive...

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