Apple finally found out that in some cases it'll be a lifesaver to have an OS installation medium :) So they finally integrated a nifty OS X Mavericks USB Pendrive Creator Tool called "createinstallmedia" which can be found within your Mavericks Image file: First download the latest copy of Mavericks from Apples Appstore and type in the following command into your MACs terminal prompt: sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/<PATH TO YOUR USB PENDRIVE> --applicationpath /Applications/Install\ OS\ X\ Mavericks.app/ --nointeraction