Virtual box shared folder is not mounted in guest

Question

I'm trying to mount a Windows host folder D:\Code to a Linux guest system.
To do that, I added it in shared folders (two attempts - both didn't work):

And there is list of folders on guest Linux system in this state:

My added D:\Code folder is not mounted. But as you can see there is a c folder which contains Users (shared from host C:\Users)

What I expected is to see code and d on the Linux guest system, but it didn't happen.
Did I forget to do something?

Answer 1

Found the aswer there: http://www.developmentalmadness.com/2016/02/27/working-with-docker/

Need to use commands in lunux:

mkdir /mnt/src
mount -t vboxsf code /mnt/code