All of my image files seem to be missing in Lightroom though the drive is connected. I have a bad feeling it is because I renamed the the external drive where I store my image files. Does this sound like it is likely the cause, and if so how do I fix the problem. I am not sure of the previous name. I tried the find all files command in Library.
So lesson number one: don't rename drives any more. In fact, once you import the photos into Lightroom, don't manage your drives, folders that contain photos or photo files in your operating system.
In Lightroom, the full path (including the former drive name) can be seen if you hover your mouse over the folder field in the Library Module in the Metadata panel on the right. Then change the name of the drive back to what it was.
Whew!!! Thanks! Lesson Learned Indeed!