I'm using Lightroom 5.5 on Windows 7. Almost always I have my external drive mounted on my laptop. It contains loooots of films. When I start "Import" in Lightroom, it makes this drive as the default import source and starts to scan it (Lightroom names it as "Camera or card reader"), which lasts almost forever because of the films. Cancelling takes even minutes, this is really annoying. I would like to exclude this disk from import, hide somehow or whatever - just to prevent Lightroom from reading it. Any ideas?