sudo apt update && sudo apt upgrade
sudo reboot
sudo apt install linux-headers-$(uname -r) dkms
sudo apt-get install virtualbox-6.1sudo apt update && apt upgrade // First update and upgrade your system
sudo apt-get install virtualbox -y
sudo apt-get install virtualbox virtualbox-dkmswget -q https://www.virtualbox.org/download/oracle_vbox_2016.asc -O- | sudo apt-key add -
wget -q https://www.virtualbox.org/download/oracle_vbox.asc -O- | sudo apt-key add -echo "deb [arch=amd64] http://download.virtualbox.org/virtualbox/debian buster contrib" | sudo tee /etc/apt/sources.list.d/virtualbox.list