更新和升级Debian VirtualBox虚拟机的步骤如下:
sudo apt update
sudo apt upgrade -y
sudo mkdir /media/cdrom
sudo mount /dev/cdrom /media/cdrom
sudo sh /media/cdrom/VBoxLinuxAdditions.run
sudo reboot
su -
nano /etc/apt/sources.list.d/virtualbox.list
<version>
为你想要安装的VirtualBox版本号):deb http://download.virtualbox.org/virtualbox/<version>/debian <version> contrib non-free
sudo apt update
sudo apt install virtualbox-<version>
/etc/apt/sources.list
文件,添加以下行:deb http://deb.debian.org/debian stretch-backports main contrib non-free
sudo apt update
sudo apt install virtualbox=<version>
完成以上步骤后,你的Debian VirtualBox虚拟机应该已经更新到最新版本,并且增强了虚拟化功能。