OS X Mavericks: InstallESD.dmg and BaseSystem.dmg [duplicate]
The Mavericks installer comes with a tool to make bootable installer. Just use
sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ OS\ X\ Mavericks.app --nointeraction