Tips

Search - Login 

Configuration screen resolution in server mode
sudo vi /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="splash vga=789"
sudo update-grub && reboot
Insert guests additions using virtualbox menu then type:
sudo mount /dev/cdrom /media/cdrom
sudo apt-get install -y dkms build-essential linux-headers-generic linux-headers-$(uname -r)
sudo /media/cdrom/VBoxLinuxAdditions.run
sudo apt-get install virtualbox-guest-dkms virtualbox-guest-utils virtualbox-guest-x11
Install SSH:
Bridge mode, allow everything
sudo apt-get install openssh-server