Carlos:
That piece of software is designed to backup the so-called "Recovery" partition on a OEM boot drive that contains the files to return the system to its factory defaults. But even though it works at times - believe me - we've run into problems with that software program time & time again to the point that we don't use it.
Your students (and yourself!) would be far, far better using the AOMEI Backupper program I recommended. It's relatively simple to use and it's a disk-cloning program that allows the user to clone the ENTIRE contents of one's drive (either a boot drive or a secondary drive). It's FREE to download (although they have a commercial version that has a few more "bells & whistles" that you don't really need in most cases). I truly believe you (and your students) would be better off learning & using that program in comparison with the OneKey program.
Actually the AOMEI Backupper disk-cloning program is NOT the program we use on a routine basis for comprehensively backing up our PCs. But the program is a commercial one costing $49.99 so it wouldn't be suitable for your students I would think. (There is a 30-day Trial Version available but I don't think that would meet your specific needs.)
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