How do I recover my ebooks if my harddrive crashes?

Introduction

I received an email from Sarah who had received an email from one of her readers wondering what to do when her harddrive crashed and she had to reformat. Because of DRM, moving away from your existing system because of a system failure or simply upgrading your computer can be fraught with problems. The following are some suggestions in preparing to move your books and how to address a harddrive failure.

Before an upgradeLocation

Make a note of the location of your ebooks.  If you...