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How to create a USB Startup stick 10.9?

Original OS was 10.6 now updated to 10.9. How do I go about making a USB stick startup complete with Disk Utility and ability to reinstall the Mavericks OS in case I need to?

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Sorry for the typo, it's 13" not 12".

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Bernie crwdns2934231:0crwdne2934231:0
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