Mavericks is the latest Mac operating system released by Apple. There are a few reasons why you may desire to install Mavericks from a USB Flash drive. Having it on a USB drive can come in really handy if you have to install Mavericks on multiple Mac’s as it means you don’t have to re-download it onto each of your computers.
Also, it’s really handy if your Mac crashes and the only way to get it working again is to reformat and re-install OS X Mavericks. Also, installing from a USB Flash drive is a lot faster than downloading a new copy from the App Store, it’s even faster than installing from a DVD.
The instructions for setting up a USB Flash drive with OS X Mavericks has slightly changed from the instructions of installing OS X Mountain Lion from USB, but don’t worry about that. I’ll walk your through the whole process.