Reviewing the manual, there are so many references to locating Events and Projects on external drives. Some references to “your computer” or “hard drive” when that appears to imply only your systems boot disk. I have a very large partition on my 2 TB internal drive that I hoped to use for FCPX but your post makes me wonder if that will even work. No problem in iMovie… 8^)
Rick Lang
iMac 27” 2.8GHz i7 16GB