How can I recover CS5 files that now produce cannot open message?

[MJ37]

Book was designed in CS5 in Windows 7 environment. Successfully printed from the files so generated. Then I archived the files on a DVD. Now cannot open them. Same CS5 has been installed on Windows 10-64 Pro. A second printing will have to use somehow recovered files or design the book all over from OCR extracted text and artist originals. ID insists it cannot open any of the chapters, though they show up as being InDesign.

[rob day]

ID insists it cannot open any of the chapters, though they show up as being InDesign.

Could you show us a screen capture of the error dialog? Can you successfully copy the InDesign files off the DVD?

[MJ37]

Rob, thanks for taking an interest. Yes, I can copy the files off the DVD, but I don't think there's any help in doing so. I used a file exploring utility since posting my problem and find that the files are solid zeroes, no data. So I've started rebuilding the book from original art work and scanned text. Not really any slower than doing the original work. Sigh!