After installing KiCad on a different partition than the default one, I can’t load the default symbols into the schema. The symbol window and symbol editor are empty.
The problem does not arise with the organization of the footprints; all fingerprints are visible.
Do you get any error messages when starting the symbol editor?
Are there libraries in the symbol library manager? (If yes: does the kicad internal path agree with where you put your libs?)
Kicad only shows loaded libraries. Many libraries can be stored in your hard disk, in a personal folder or in the Kicad / share / kicad / library. But they are not madatorily loaded into any project by default.
Open the library manager as suggested by @Rene_Poschl in order to check which libraries are loaded.