Ok, so here's what happened. I was using a 3tb hard drive, noticed I was running out of storage- realized that the Neweer Voyagerdrive box I was using DOESN'T RECOGNIZE over 2TB drives! So I used SuperDuper to copy all the data to a new 3TB drive. But now I'm worried that all my edits (800GB worth) will vanish!
All you should have to do is start Lightroom and highlight the topmost folder. Right-click on that folder and choose to update the folder location. Then you will be able to point Lightroom to the folder on the new hard drive. Everything should still be in place and your work should continue as usual.