Creating a bootable 10.10 Yosemite volume

With the release of Mac OS 10.10 Yosemite earlier this week, I wanted to share a fast and easy way to create a bootable volume from which you can install Yosemite (that can be a harddrive or a usb key).

  1. Download Yosemite from the Mac App Store.
  2. Plug in your external disk/volume and make sure it’s either empty or can be formatted in the next step.
  3. Open terminal.app and enter the following command:
    sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia --volume /Volumes/*your volume here*/ --applicationpath /Applications/Install\ OS\ X\ Yosemite.app

    This will convert your volume install a bootable installer based on the application path you provided, which is the Yosemite “app” in this case

  4. Enter your administrator password,
  5. You’ll be prompted to confirm that the volume can be erase, press ‘y’,
  6. And done.

 

Now connect the drive to machine you want to upgrade/reinstall, boot it up while holding the ‘c’ key and select the “Install 10.10. Yosemite” volume.

1 thought on “Creating a bootable 10.10 Yosemite volume”

  1. Great blogpost Jan!

    Only one tiny comment. Holding the ‘c’ didn’t do the trick on my iMac. Instead I used the ⌥ key in order to get to the volume selection screen.

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