I'm about ready pull out my few remaining strands of hair. Here is the problem. I've got a few dozen old picture that I had imported into LR as far back as 3.0. They are still on my hard drive, in the original folder. I can see the files when I use Windows Explorer. They are right where they should be. When I look in LR they aren't there and the folder that they are in isn't showing so I can re-import them!! I'm totally lost. These are old .crw Canon files, that I took with the mine and Canon's first DSLR. Many of the pictures on my hard drive with that same camera and same file extension are showing. If you all have any ideas on how I can get them into my LRCAT I would sure appreciate the help. Look at it as a way to save my hair!!
Not sure why LR can't see the folder on your hard drive. Anyways, in the finder, go to the original folder and just drag it into the LR window and import.