1. HankAZ's Avatar
    You can upgrade to OS X Yosemite from the App Store, but that isn't ideal for installing on multiple Macs or doing a clean install. Here's how to burn Yosemite to a USB drive instead.

    As with all OS X upgrades, once you run the installer on your system, it disappears from your Applications folder. You can get it back by holding down the option key while clicking on the purchases tab to re-download the file or restore the installer from a Time Machine backup, but to save you some time, it's best to do this disc burning before you update your Mac to Yosemite.

    You can burn it yourself with no extra software with a simple terminal command. Here's what you need to do:

    1. Download the Yosemite installer, if you haven't already.
    2. Insert an 8GB (or larger) flash drive, and give it the name Untitled. Make sure the drive is formatted OS X Extended (Journaled). If not, hop into Disk Utility and format it so it is. If you have any important data on the drive, back it up now, since this process will completely erase it.
    3. Open up the Terminal, either through spotlight or by double-clicking on it in /Applications/Utilities.
    4. Copy and paste the following command into your Terminal window and press Enter:
      sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ OS\ X\ Yosemite.app --nointeraction


    5. Type in your password when prompted and press Enter.
    6. Let the command work its magic. Don't interrupt it until you see the final line that says Done before it returns you to the prompt. This could take as long as a half hour, so be patient.

    When its done, you can insert that drive into any Mac and launch the installer by holding Option when you boot the computer. Besides installing Yosemite, this drive will have a couple handy utilities on it, like Disk Utility and Time Machine recovery.
    Last edited by HankAZ; 10-16-2014 at 07:15 PM.
    10-16-2014 06:58 PM
  2. Just_Me_D's Avatar
    Thank you, HankAZ. I've already read other posts inquiring about this. Thanks again for putting it together for us....
    10-16-2014 07:18 PM
  3. taz323's Avatar
    Very useful, thank you.
    10-17-2014 08:12 AM
  4. pr1nce's Avatar
    Thanks HankAz!
    10-17-2014 09:13 AM
  5. Vincent Boyer's Avatar
    Besides installing Yosemite, this drive will have a couple handy utilities on it, like Disk Utility and Time Machine recovery.
    Well it's OK but I don't see any options in Utilities to perform a Time Machine Recovery as I was used to since OS X 10.6. It just disappeared… Very anoying if something goes wrong. Guess what ? That's just happened to me when I couldn't boot anymore due to an file structure issue. The only way to restore back my setup was to use a 10.9.5 USB Install disk that I fortunately made before Yosemite is out.

    Did I Miss something ?
    10-18-2014 05:56 PM
  6. donald kepler's Avatar
    well, I have a query. If I get an external drive of 20 GB and make a partition of 8 GB and formatted as you specified and OS X Journaled also. Will it be the right way to proceed towards making of Yosemite Installer media drive?
    11-07-2014 02:21 AM
  7. Tommy Hermansen's Avatar
    sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ macOS\ Sierra.app --nointeraction
    09-09-2016 11:06 AM

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