Just purchased a 5tb external hard drive. The drive appears on my imac desktop, but dose not show in LR. How do I get it to show up in LR?
That depends on what you want to do.
What do you want to do?
I would like to move a folder with images from an existing hard drive that already shows in lightroom to the 5tb drive that does not appear in LR
Click on the + that appears to the right of the heading "Folders" and select Add Folder. Navigate to the new drive and create there the folder to which you want to move the photos (or simply select it if it's already there).