The author is far more knowledgeable than I am and so I depend on the information published in the book as reliable. However I found some annoyingly misleading information. For instance he says "your existing drivers will work without modification". This is patently untrue. My Canoscam LIDE 30 is not compatible and there are many more hardware drivers for earlier versions that do not work with Windows 8.1. One only has to visit Microsoft's compatibility centre to check the huge range of old hardware that are not compatible. There are also many mistakes, some of which are very annoying. For instance he says that Windows 8.1 removed the ability to make system backups. He recommends using Macrium Reflect Free for this. Fortunately for me, this software stalled towards the end of the installation and I aborted it. I then checked the "unconfirmed" errata at [...]
and I had no problem doing a system backup as pointed out in one of the error descriptions.