Frequently Asked Questions
MacOS USB Recovery Media
Last Updated 3 years ago
Use the 'createinstallmedia' command in Terminal
- Download the OS X installer from the Mac App Store. Quit the installer if it opens automatically after downloading. The installer will be in your Applications folder.
- Mount your USB flash drive or other volume. You could also use a secondary internal partition.
- Open the Terminal app, which is in the Utilities folder of your Applications folder.
- Use the
createinstallmediacommand in Terminal to create the bootable installer. Examples of this command are in the next section. For detailed usage instructions, make sure that the appropriate Install OS X app is in your Applications folder, then enter one of the following paths in Terminal:
Path for El Captain
/Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia
Path for Yosemite
/Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia
Path for Mavericks
/Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia
ExamplesThis is the basic syntax of the command. Replace
<var>volumepath</var>with the path to your USB flash drive or other volume, and replace
<var>installerpath</var>with the path to the Install OS X app.
Example for El Captain
sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app
Example for Yosemite
sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ OS\ X\ Yosemite.app
Example for Mavericks
sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ OS\ X\ Mavericks.app