I am currently running Lightroom 5.7 64-bit,. Lightroom is installed on my pc Laptop and my catalogue and images are on a single external HDD. I have filled the external drive and bought another, I am wondering do I need to retire the old drive or is there a way to connect the new drive along with the old one and access images from both of them? They are both 3TB WD mybook.. If I can run both what is the best way to set them up? New drive, new catalogue? I currently have all images as a single catalogue. TY everyone, Take care.