OMV，安装vbox有问题，重装2018-09-27

简单记录一下：
先卸载清除旧的：

apt-get purge virtualbox openmediavault-virtualbox virtualbox-extpack-installer phpvirtualbox
rm -f /etc/default/openmediavault-virtualbox /etc/default/virtualbox
userdel vbox
rm -rf /usr/lib/virtualbox
rm -rf /var/cache/apt/archives

添加源：

echo "deb http://download.virtualbox.org/virtualbox/debian stretch contrib" | sudo tee /etc/apt/sources.list.d/virtualbox.list

导入key:

wget -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 -

sudo apt-get update后重新安装：

apt-get install openmediavault-virtualbox