OS X Yosemite Partition from El Cap

Discussion in 'OS X El Capitan (10.11)' started by afsnyder, Jul 1, 2015.

  1. afsnyder macrumors 65816

    Joined:
    Jan 7, 2014
    #1
    How do I install OS X Yosemite on another partition from OS El Capitan DP2? I downloaded the App Store installer app but it doesn't open on El Capitan. What are my options?
     
  2. KALLT macrumors 601

    Joined:
    Sep 23, 2008
    #2
    Put it on a thumb drive and boot from it. Alternatively, use Internet recovery (command + option + R on boot) to install the OS that was shipped with your Mac and then upgrade to Yosemite from there.
     
  3. AppleFan22 macrumors regular

    Joined:
    Jan 3, 2014
    #3
    After you get Yosemite running, I'll assume you'd want to have it as a partition in your hard drive, yes? Create a small back up of Yosemite, create a partition of your hard drive, boot into recovery mode, and then go to the Time Machine pane. From there, you can have it install Yosemite into your new partition.

    I don't quite know how the thumb drive idea (above) works, but once you get Yosemite running, this method will finish it off for you.
     

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