Since there is no way to choose the install location of UE4 using the launcher I had followed this tutorial.
I have now used the Engine from external drive for a few months and I have encountered several problems with this setup. Most of the problems are related to rendering and always lead to a crash.
Most of these crashes can be avoided by launching the engine directly from the UE4Editor.app executable instead of the launcher. This makes the engine at least usable. (Without doing this the engine will crash any time it tries to compile shaders or build lighting, I have reported this already in this thread.) So for now, I use the launcher only to update the engine.
Now I have a new problem with view modes. Using some optimization view modes, any LOD Coloration view modes or any collision view modes causes a crash immediately / after moving camera.
/Users/Shared/Epic Games/to another drive (=not boot drive)
- From terminal, do this
ln -s "/pathToEpicGamesFolderInAnotherDrive/" "/Users/Shared/"to create a symlink.
- Go to
/Users/Shared/Epic Games/, go to engine folder, then launch the engine from here
- Open any project / Create new project
- Switch the view mode to Mesh LODs or to almost any other view mode thats not the top 4.
- If the editor does not crash, try moving the camera