Avoid anxiety and enjoy an easy upgrade!
Upgrade with confidence as you follow Mac guru Joe Kissell's essential advice. You'll ensure that your hardware and software are ready for Sierra, prevent problems by making a bootable duplicate of your main drive, and decide on the best installation method for your particular situation. You'll also find full installation directions, plus suggestions on what to do immediately after the install. The book ends with a look at how to handle a failed or problematic installation.
You'll experience an easy upgrade and deal quickly with post-installation quirks with these topics: