VirtualBox install/update Guest Additions
1. Make guest additions iso available on host server VBoxManage storageattach "" --storagectl IDE --port 0 --device 0 --type dvddrive --medium /usr/share/virtualbox/VBoxGuestAdditions.iso 2. Mount cdrom and install/update guest additions in guest sudo mount /dev/cdrom /media/cdrom sudo bash /media/cdrom/VBoxLinuxAdditions.run sudo umount /media/cdom 3. Reboot guest to ensure everything is loaded. sudo reboot now 4. Remove CD iso VBoxManage storageattach "" --storagectl IDE --port 0 --device 0 --medium "none"