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mountain lion is not compatible

1954 Views 53 Replies Latest reply: Dec 10, 2012 7:47 PM by Dummnut RSS
  • babowa Level 7 Level 7 (22,060 points)
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    Dec 6, 2012 7:39 AM (in response to LexSchellings)

    Much better detail than my reply! Yes, because of the somewhat confusing licensing of ML purchased in the app store vs. it being preinstalled, a Mac with ML preinstalled cannot re-download from the app store. One needs to use the recovery process to do that....... or:

     

    @ dummnut:

     

    If I may suggest and your machine is pretty new (not much/any tweaking done), I'd make a bootable clone of your "pristine, out of the box" system for emergencies. That would mean you do not have to download the entire system again. I did that when I got my new MBP a couple of months ago (which came with Lion preinstalled). One of my reasons: I do have a monthly bandwidth cap and not the fastest connection speeds, so I'd rather not have to download a 4 GB file if I don't have to. I do not update that particular clone - it is meant for dire emergencies where a clean install is necessary. I have another clone which is updated regularly.

  • LexSchellings Level 5 Level 5 (5,495 points)
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    Dec 6, 2012 8:07 AM (in response to babowa)

    Hi Babowa, indeed. A "backup" of the OS after download and before install, with Lion Diskmaker (for Lion and Mountain Lion).

  • babowa Level 7 Level 7 (22,060 points)
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    Dec 6, 2012 8:16 AM (in response to LexSchellings)

    I've not used the Lion Diskmaker - I just use CarbonCopyCloner and make a clone (actually I have two clones of every OS version I have spread over three external hard drives).

  • LexSchellings Level 5 Level 5 (5,495 points)
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    Dec 6, 2012 8:26 AM (in response to babowa)

    I use CCC already twice every week, onto two different disks. but LionDiskMaker to make a bootable stick, you never know...

  • babowa Level 7 Level 7 (22,060 points)
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    Dec 6, 2012 8:30 AM (in response to LexSchellings)

    True.......

  • Dummnut Level 1 Level 1 (0 points)
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    Dec 6, 2012 11:27 AM (in response to babowa)

    It's very easy to make your own backup USB sticks of ML installer,  Lion Diskmaker is not needed to make a bootable backup install of the downloaded installx.dmg file, actually has not been very successful for me so I make my own.  real easy

     

    As far as the Macmini is concerned, there is no dmg file to make a bootable USB stick, which is my whole gripe!  Unless I can use the downloaded file from the Internet recovery, actually had not considered this.  will investigate

     

    My Internet bandwidth is limited to 70Mb/s so 4GB is not really an issue, insignificant almost, usually download complete by the time I've made a cup of coffee.    old dial up days are long gone

     

    CCC works great for backups but my pristine original install is no longer pristine unfortunately besides a clean install is always better. 

  • babowa Level 7 Level 7 (22,060 points)
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    Dec 6, 2012 1:21 PM (in response to Dummnut)

    Unless I can use the downloaded file from the Internet recovery, actually had not considered this.  will investigate

    You need to download and once that is finished, dismiss the installer. If it is the full installer, find it in Applications folder. Copy it to a safe place somewhere else and then initiate the install process. If it's only an update, you should be able to find it in /Library/Updates (that will self destruct as well after the install is done).

     

    I prefer my bootable clones over a USB stick (although I have one for each OS I have) A 4 GB download takes a minimum of 90 minutes here, quite often up to 3 hours - and this is not dialup. It was actually slower when I had Comcast cable (never more than 1.2 mbps at most, most of the time half that). We only have two choices here: Comcast which doesn't deliver because of 30+ year old cables and DSL which does deliver what they promise, but is somewhat slow. Not every part of the US has FIOS, not even in suburbia.

  • Dummnut Level 1 Level 1 (0 points)
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    Dec 6, 2012 9:20 PM (in response to babowa)

    I'll give that a shot thanks

  • Dummnut Level 1 Level 1 (0 points)
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    Dec 10, 2012 7:47 PM (in response to Dummnut)

    Ok, the error message is still perplexing, Apple could help the situation by making it a more meaningfull message.

     

    In the meantime I found "Recovery Disk Assistant"  http://support.apple.com/kb/HT4848  using it and the original (recovered from the trash bin) Hard Disk Drive I created a USB Install/Recovery drive.

     

    Original Recovery HD and a USB thumb drive is required.

     

     

    I believe this is all i need to install Mountain Lion from the original factory OSX 10.8.1 installation to any drive on this Mac mini6,2

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