OK, after some lockups, I reinstalled. installed steam-native, clicked the icon and it came right up. I had to add my extra Steam folders, and it crashed. Since then, it starts, executes a long disk write, and crashes. I’ve been unable to start steam-native as well as steam-manjaro.
Well, I created another folder called “teamapps,” moved the contents of steamapps to it, deleted the empty folder and renamed the new folder. I cannot move apps from one drive to another unless Steam is running, and that remains problematic.
Yes, and a .dmp file was submitted. I “solved” my problem by (gulp) deleting .local/share/Steam. Adding the SSD partition works fine. Adding the external drive crashes Steam and renders it unloadable.
And now I have terabytes to redownload.
I formatted the external drive and was able to add it as a Steam folder, and am downloading games to it.