Mac not booting? Software update went wrong? Need to do a reinstall? These are just some of the reasons why having a diagnostic drive available is something that we all should have (in addition to a good backup strategy, of course). In this tutorial, we’ll be setting up an old external USB drive with some essential software to allow us to boot, fix and reinstall software on a Mac.
Not long after my article on Plex, I’ve got another article over at Mactuts+. An in-depth guide (with screencast) on creating a fairly simple diagnostic drive.