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Thanks for your question. Perhaps I misunderstand what you're looking for, but the "Missing CD" for our Missing Manuals is not a single download of a disk image (the book does not come with a CD), so I'm not sure what you've mistakenly deleted.
The Missing CD for Windows 8: The Missing Manual is a web page of links to downloads and supporting information referenced in the book. Since most of these resources are maintained by third parties, we can't offer it as a single download, but you can find all links, organized by chapter in which they're referenced, at the following link:
I hope this helps you find what you're looking for. If not, or if you have any other questions, please don't hesitate to ask.
Senior Editor, Missing Manuals