September 27th, 2015

How to create a recovery USB drive for your mac

1- Download the OS X Installer (into /Applications)

2- Insert a USB stick and use "Disk Utility" to format it as "Mac OS Extended (Journaled)" and name it "USB".  Use the "Erase" tab for formatting.

3- Then run the following inside of a terminal shell:

[mbp:~ brad.allison]$ sudo /Applications/Install\ OS\ X\ --volume /Volumes/USB  --applicationpath /Applications/Install\ OS\ X\ --nointeraction

The output will look like this:

Erasing Disk: 0%... 10%... 20%... 30%...100%...
Copying installer files to disk...
Copy complete.
Making disk bootable...
Copying boot files...
Copy complete.