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How to Create a Mac OS Sierra Recovery Disk
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MacOS_RecoveryDisk.md

MacOS (Sierra) Recovery Disk

Prerequisites

USB drive with atleast 5 GB of storage

Steps

  1. Download MacOS Sierra from the App Store (cancel out of the installation)

  2. Open Finder and navigate to Applications directory

  3. Right click on Install macOS Sierra and select Show Package Contents. Drop down to Resources and select createinstallmedia

  4. Launch a Terminal window

  5. Type sudo followed by dragging the path of createinstallmedia

  6. Type --volume followed by the path of the USB drive's volume

  7. Type --applicationpath followed by the path of Install macOS Sierra.app

  8. The fully formed command line would look like this (newlines added for clarity):

     sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia 
      --volume /Volumes/Sierra/ 
      --applicationpath /Applications/Install\ macOS\ Sierra.app

  9. Hit Enter to run the command followed by the root password (when prompted)

  10. Wait patiently while the Recovery disk is being created.

Booting from the Recovery Disk

  1. Shutdown your Mac
  2. Insert the USB stick/drive
  3. Power on the Mac and hit the Option key immediately and hold it down
  4. You will be presented with a boot menu with one of the options being your Recovery disk
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