Sorry utahjake, I'm gonna bow out at this point - maybe another forumer will provide better service.
But for their sake, and yours, consider elaborating your answer(s).
Being concise is good, but being "too concise": not so much - think "Einstein" (as simple as possible, but no simpler..).
Summary:
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I'm assuming you tried to relink the photos, but failed - in your words: "could not find the folder with photos".
If my assumption is correct (you haven't told us the steps you took which led to "not finding the folder with photos"), it begs the question "Why not?" (I mean, if the folder/files exist on disk, then you should be able to select the location where they exist on disk), but you've not mentioned anything about why you were unable to successfully complete this critical step - what, exactly, happened (or didn't happen), when you tried, and how, exactly, did you "try", etc. etc. etc.........
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PS - The purpose (or one of the purposes anyway) of the question about what drive are the files on versus what drive is Lr expecting them to be on was to ascertain whether you just need to fix the drive letter to solve the problem. If the drive letter *is* already fixed as G, and is the same now as it was when photos were imported (are you sure?) then why not say so? (you haven't, yet).
Good luck,
Rob