Make a Bootable Mac OS X 10.7 Lion Installer from a USB Flash Drive I’m going to walk through the process of making a bootable Mac OS X 10.7 Lion installation drive out of any USB flash drive key. This is similar to the process of making a bootable Lion installer DVD, but I prefer a USB flash drive because it’s faster, smaller, and I have a MacBook Air so an installation DVD isn’t too useful for m
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