built-in folder
nounUK /ˌbɪlt ɪn ˈfəʊldə/
US /ˌbɪlt ɪn ˈfoʊldər/
A built-in folder is a folder that is already on your computer when you get it.
You can save your pictures in the built-in folder called Pictures.
OTHER MEANINGS
2. A folder that comes as part of a program and cannot be removed.
The app keeps its settings in a built-in folder.
3. A folder included by default in an operating system's file structure.
Downloads is a built-in folder on most computers.
4. A permanent folder created automatically during installation.
The installer made a built-in folder for the game's save files.