iMovie does not read external drive
My iMovie 10.3.4 stopped reading (scrolling) files from a 2 TB external solid state drive. I can open the drive and I can scroll down to view all the files without iMovie. This happened today, after adding several large videos and a few images into the 2 TB external drive. imovie was reading the files and importing to "MY Media", yesterday. Suddenly the iMovie no long sees, recognizes, pulls up any of the files on the 2 TB drive. In addition, today, I can go from one external drive, to the other, but iMovie does not pull up any files, the drives appear empty. The only location that iMovie reads is the Desktop.
Two months ago, another external drive could not be read. I attached a new solid state drive which worked fine until today. The external drive which iMovie cannot read anymore has about 1.9 TB available out of a 2 TB external drive. Now I can only read (scroll) the Desktop files. Any ideas