With Mac OS X Lion and a new piece of free software, it’s easier than ever to create a USB keychain that you can boot from.

We’ve already covered how to do this from the command line (See How to create a bootable USB to install OS X), but I wanted to give those with a fear of the command line a way to do the same thing.

Though you can install Mavericks (OS X 10.9) directly from your Mac's hard drive, a bootable installer drive can be more convenient for installing the OS onto multiple Macs. And if your Mac is ...