Create bootable OS X Maverick USB Flash Drive from original App Store Mavericks 10.9 package.
1) Erase a minimum 8GB USB pen drive using Disk Utility* and ensure it’s named ‘Untitled’ and Mac OS Extended (Journaled) format.
2) Download OS X Mavericks from the Mac App Store. It’ll download and save to the Applications folder automatically. Furthermore, after it’s finished downloading, it may automatically begin the install process. If this happens, just quickly cancel it.
3) Run the below command in Terminal** window:
sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ OS\ X\ Mavericks.app --nointeraction
4) Type your current user password.
The application will erase your USB pen drive first, then write Mac OS X Mavericks files making it bootable. The result of burning image into USB should be as follows:
Erasing Disk: 0%… 10%… 20%…100%…
Copying installer files to disk…
Making disk bootable…
Copying boot files…