All modifications to your images are stored in the catalog, not to the images. Do you still have the catalog that you were working on previously? Where is that catalog stored? Are the images still in the same folder structure they were in previously? Where are the images now located?
You asked: Do you still have the catalog that you were working on previously?
Answer: Yes, I do.
You asked: Where is that catalog stored?
Answer: On my local hard drive on the Mac under "Pictures\Lightroom\2017_Lightroom Catalog" folder.
You asked: Are the images still in the same folder structure they were in previously?
Answer: Yes. Folder Structure within Finder or OS. Not withing lightroom.
You asked: Where are the images now located?
Answer: In a new USB 3.0 External HD.
Okay, just start Lightroom as normal using the catalog you have been using and go to the library module. If your images are all stored within one master folder, right-click on the topmost folder and choose to update the folder location and point Lightroom to the topmost folder on the new hard drive. Everything will update to the new external hard drive and you are done. If the images are not within one master folder then you will have to update the location of each individual folder. But that isn't going to be that much more difficult.
Ok, will do that although I am trying my best to recover some non-lightroom photos had one that failed hard drive. Sometimes it shows up and sometimes does not. I just shut it down, unplug the power and usb hd and will try again with the new hard drive. I will let you know around in an hour or so. tx,
Jim, thank you very much. That did it. The catalog showed the old hard drive with the folders and just needed to re-point the folders into the new hard drive and i am set. Thanks for your help.
Great! I'm glad it worked out for you.