Here’s another cool How-to from I fix screens. In this tutorial we will show you how to make a bootable OS X Yosemite USB key, so you can boot OS X Yosemite from anywhere using a USB.

 

Step 1: Connect a 8GB or larger USB key to your Macbook

Step 2: Launch the Mac App Store

Mac store logo

Step 3: Go to the OS X Yosemite application page in the app store and click on the Install button. *If you have already downloaded OS X Yosemite on your mac or have installed it, you will have to click on the “Download” button again.

Yosmite

Step 4: Launch the Disk Utility application. (This will be in the utilities folder)

Disk Utility

Step 5: In the Disk Utility application, select the USB dive (This will be on the left and side)

Step 6: Click on the Partition TabPartition

Step 7: Under Partition Layout: set it to 1 Partition; change Name to: Yosemite; and Format: Mac OS Extended (Journaled)

Partition Layout

Step 8: Click on the “Options” button and click on the botton that says “GUID Partition Table” then click OK

GUID

Step 9: Click “Apply” to save all your changes. When you are asked to confirm, clock the “Partition” button.

Step9Yos

Step 10: Open and launch “Terminal” on your mac, (this will be located in the utilities folder)

Terminal

Step 11: Make sure you do not have any other versions named “Yosemite” (other then the one we just created above) and make sure your empty USB stick is still inserted.

Step 10: Type or copy the following command into the Terminal Application window.

sudo ‘/Applications/Install OS X Yosemite.app/Contents/Resources/createinstallmedia’ –volume ‘/Volumes/Yosemite’ –applicationpath ‘/Applications/Install OS X Yosemite.app’ –nointeraction

Screen Shot 2014-11-15 at 6.25.36 PM

Step 12: You will be asked to enter your password. This is the administrative account password for your mac.

Step 13: After about 15-20 minutes your USB install Key for OS X Yosemite will be complete, you should see a “Copy complete” and “Done” on your window.

 

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