Cannot install 10.10 on iMac 8,1?

Discussion in 'OS X Yosemite (10.10)' started by fotuwe, Jun 26, 2015.

  1. fotuwe macrumors member

    Joined:
    Dec 22, 2009
    #1
    Hi there!

    I was asked to help a friend out with upgrading his Mac (mainly because he bought a new rMBP13 with 10.10 running). So we want to keep both (iMac+rMBP) on the same OSX Version.

    Right now the iMac is running with 10.5.x. So I created an 10.10 USB-Stick - surprisingly I am not allowed to install it on the iMac HDD? While booting with 10.5.x I am also not able to double-klick the installation file on the usb drive - problem with the architecture.

    I tripple-checked that 10.10 is running on an iMac 8,1 (2GB Ram - this will be upgraded next to 4).

    I am cloning the HDD now, the completely erase the iMac HDD and try a new clean install ... but somehow I think I will get the same problem?

    Any suggestions?
     
  2. fotuwe thread starter macrumors member

    Joined:
    Dec 22, 2009
  3. fotuwe thread starter macrumors member

    Joined:
    Dec 22, 2009
    #3
    Solved: Upgrade to 10.6.8 - then update to 10.10.
    I wasnt able to install it with a bootable 10.10 stick .. for whatever reason.

    So: Always 10.6.8 ... then the next step
     

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