Thank you Dave, Graeme, Kers and Slobodan.
As suggested, I hooked up the h-d to the computer and lo and behold, like a magicians sleight of hand, the photos instantly appeared. What relief ! All the warnings I read about trying this came to nought. No machines burst into flames and as far as I can tell, no curse has descended upon me. (At least none I can detect.)
Thank you all again.
Richard