depmod: ERROR: fstatat(5, vboxsf.ko): No such file or directory depmod: ERROR: fstatat(5, vboxvideo.ko): No such file or directory depmod: ERROR: fstatat(5, vboxguest.ko): No such file or directory VirtualBox Guest Additions: Starting. VirtualBox Guest Additions: Building the VirtualBox Guest Additions kernel modules. This may take a while. VirtualBox Guest Additions: To build modules for other installed kernels, run VirtualBox Guest Additions: /sbin/rcvboxadd quicksetup VirtualBox Guest Additions: or VirtualBox Guest Additions: /sbin/rcvboxadd quicksetup all VirtualBox Guest Additions: Building the modules for kernel 4.1.39-56-default. VirtualBox Guest Additions: Look at /var/log/vboxadd-setup.log to find out what went wrong depmod: ERROR: fstatat(5, vboxsf.ko): No such file or directory depmod: ERROR: fstatat(5, vboxvideo.ko): No such file or directory depmod: ERROR: fstatat(5, vboxguest.ko): No such file or directory VirtualBox Guest Additions: Running kernel modules will not be replaced until the system is restarted