I'm having trouble with this. It seems the standard way is to have the OS X install file in your Applications folder and then run the following in Terminal
sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ OS\ X\ Mavericks.app --nointeraction
But when I do that, all I get is the error
command not found
I can't see how it could be the file path because this is the line of text given in various online tutorials for people to copy and paste?
On a different note, I then tried to create a bootable USB the more 'old school' way purely through Disk Utility, but then found that my USB drive doesn't show up when I hold down the Option key when booting up my Mac... all I see is 'Macintosh HD' or 'Recovery HD' (or whatever they're called).
Might that be related to my problem?