Thank you both. I'm from the DOS age so my background is rooted there.

The file system is NTFS. It's pretty well most everything on the drive that was affected. That is my backup drive, and I have current versions of most of that data I can use, but only have an older backup of the .jpg pictures, that doesn't contain anything added in the past 6-8 months, so that's the data I'd like to restore.

Chkdsk was operating so fast, I couldn't follow what it was doing on the screen, but it appeared to be making hundreds of corrections. I was able to access the drive again when it finished but with inaccessible jpegs.

Yes, I understand about the thumbnails.

I'll have to just go through the list of software but it doesn't' look good. Convar Smart Recovery found 1 file in 130,000 sectors in about ten minutes now.

Thanks!