Whoa! Something! I removed utf8 from both drives in fstab, and neither would open by button or terminal. I put utf8 back on the drive that was working, and it's working again....left utf8 off the burner.
Here's the new development: the burner still spins up but will not mount/read anything, so I FINALLY got the idea to see if it would notice a blank. Put the blank in and it mounted an icon to the desktop, and popped up a "you just inserted a blank dvd. Do you wish to burn a disc with:"!!!! So I have a drive that will read, and another that will burn! Technically I guess I have what I need! Still be nice to have both read, but maybe I shouldn't push my luck! Still not 100% sure it's working properly, but at least it's something. Thanks again!