This is a built-in "feature" of Lightroom, you can't make it recognize the B: drive (or the A: drive)
Yes, you have to change the drive letter to something later in the alphabet (C-Z should work)
Thanks. Got it. I appreciate your taking time to explain.
This is what I suspected. Why would Adobe go out of its way to do something that has no obvious benefit and that is a nuisance to some of its users. I'll just have to move 149 gigs of photo to another drive. Like Tom, changing the B: drive designation would create even more problems with programs I'm already using. Why? It makes no sense.
We're just Lightroom users here. We can't explain why Adobe chooses to do certain things.
Sure. But can't we ***** about dumb stuff and hope Adobe notices. Or for that matter how do you send a complaint directly to Adobe?
Meanwhile,I may have come up to a solution to the Drive B: problem. On the Import screen, upper left, there is a bar marker Folders. Right click on it, and one of your choice is to select a folder. Click on that and you can Navigate wherever you like, including Drive B.
That said, after 24 hours of importing photos from drives other than B. it says I have 0 photos in may catalog.