The Prime ecosystem is designed with a distributed database system that uses relative file paths.
Ok that’s is a mouth full of technical stuff. Translation:
It doesn’t matter if you prepared the drive using MacOS or Windows and if it’s external or internal. The complete Engine Prime library (on either OS) will integrate with various other databases part of the collection the moment the drive is mounted. This is for crates and “all tracks” aka the Collection view.
One notable exception are playlists, these exist only on the drive where the tracks the playlists contain are stored… But you can drag them between drives and EP will take care of the track copying for you.
this seems to be related to this question