В Linux Mint 16 уже установлены драйверы VirtualBox. Прежде чем устанавливать гостевые дополнения VBoxAdditions в гостевую операционную систему Linux Mint 16, необходимо обновить Linux Mint.

sudo apt-get update
sudo apt-get upgrade

Перезагрузите гостевую Linux Mint 16, войдите в систему и нажмите Ctrl+D. Будет обнаружен диск с гостевыми дополнениями VirtualBox.

Обнаружен диск с гостевыми дополнениями VirtualBox

Нажмите кнопку Запустить. Запустится установка гостевых дополнений VirtualBox.

Verifying archive integrity... All good.
Uncompressing VirtualBox 4.3.6 Guest Additions for Linux............
VirtualBox Guest Additions installer
You appear to have a version of the VBoxGuestAdditions software
on your system which was installed from a different source or using a
different type of installer.  If you installed it from a package from your
Linux distribution or if it is a default part of the system then we strongly
recommend that you cancel this installation and remove it properly before
installing this version.  If this is simply an older or a damaged
installation you may safely proceed.

Do you wish to continue anyway? [yes or no]
yes
Removing existing VirtualBox DKMS kernel modules ...done.
Removing existing VirtualBox non-DKMS kernel modules ...done.
Copying additional installer modules ...
Installing additional modules ...
Removing existing VirtualBox DKMS kernel modules ...done.
Removing existing VirtualBox non-DKMS kernel modules ...done.
Building the VirtualBox Guest Additions kernel modules ...done.
Doing non-kernel setup of the Guest Additions ...done.
You should restart your guest to make sure the new modules are actually used

Installing the Window System drivers
Installing X.Org Server 1.14 modules ...done.
Setting up the Window System to use the Guest Additions ...done.
You may need to restart the hal service and the Window System (or just restart
the guest system) to enable the Guest Additions.

Installing graphics libraries and desktop services components ...done.
Press Return to close this window...

Теперь опять перезагрузите гостевую систему Linux Mint 16.

В Linux Mint убедитесь, что драйверы VirtualBox Guest Addition установлены в ядро и используется.

lsmod | grep vb
vboxsf                 39574  0 
vboxvideo              12658  2 
drm                   296739  3 vboxvideo
vboxguest             244305  8 vboxsf