There's currently 1,014 users indicating "I have the same question", yet, why is there no reply since 19July2018?
I have tried all of the aforementioned, and I too have precious photos and files currently unobtainable.
As my DVD-R is not accessible, due to being unable to load/reach Windows on my Toshiba Satellite laptop, I tried the installation media via USB. Unsuccessful. Due to restricted I.T. priveleges on my work laptop, I had to download it on my phone, transfer it from micro SD to USB, before attempting boot on the Toshiba..
I am currently asking people I know "do you have a DVD-R?" so I can try installation media via the DVD drive..
What a nightmare!
A resolution would be welcome, or, at minimum, an offering of free installation media [DVD] for those encountering the same dilemma as above