To mount more than one shared folder into the VM after installation, you must follow the instructions in Oracle VirtualBox documentation: 4.3 Shared folders.
The mountpoint referred to in the instructions must be created on the virtual
guest prior to mounting. For example, if you have shared the C:\projects folder with the shared name of "projects" using the
preceding instructions, you need to open a terminal window in the Virtual Machine from
and create a directory with the following command: mkdir -p /home/ise/projects. Then the mount command is
sudo mount -t vboxsf projects projects.