Thank you Rob, At least I have a good copy of the image I wanted to save originally … I had forgotten what the rest of the set looked like and so now I can rest and accept the fact they are gone …. making the one left so much rarer!! (not sure that means “valuable”!! In fact I wonder how many of the images we make are actually “valuable” … something to ponder. Andy > On Apr 15, 2020, at 6:35 AM, Rob Talbot <histrio@xxxxxxxxx> wrote: > > Just had a look with a hex editor. > https://hexed.it/ > > The unreadable files are simply filled with zeros. > > There is no data or header to recover. > > Looks like the backup had "saved space for the file in the FAT but not copied / preserved the data inside. >