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Created October 27, 2013 07:20
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osx-mavericks-install-media.md

Creating a bootable OS X Mavericks USB installer

  • First, plug in an 8GB (or bigger) USB drive, and use Disk Utility to erase it
  • If you use the default settings, you should wind up with a blank drive at /Volumes/Untitled.

With that volume in place, and with the Mavericks installer sitting in /Applications/Install\ OS\ X\ Mavericks.app, run the following command in your terminal to create a bootable install media:

sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ OS\ X\ Mavericks.app --nointeraction

You should see output like the following—it might take a while to finish.

Erasing Disk: 0%... 10%... 20%...100%...
Copying installer files to disk...
Copy complete.
Making disk bootable...
Copying boot files...
Copy complete.
Done.

To boot from the installer, reboot your Mac and hold down the alt/option key, and it will let you choose to boot from the USB disk.

Enjoy!

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