Using the Alternative Generic Installer (VirtualBox.run)

The alternative generic installer performs the following steps:

Unpacks the application files to the target directory /opt/VirtualBox/, which cannot be changed.
Builds and installs the kernel modules: vboxdrv, vboxnetflt, and vboxnetadp.
Creates /sbin/rcvboxdrv, an init script to start the kernel module.
Creates a new system group called vboxusers.
Creates symbolic links in /usr/bin to a shell script /opt/VirtualBox/VBox which does some sanity checks and dispatches to the actual executables: VirtualBox, VBoxVRDP, VBoxHeadless and VBoxManage.
Creates /etc/udev/rules.d/60-vboxdrv.rules, a description file for udev, if that is present, which makes the USB devices accessible to all users in the vboxusers group.
Writes the installation directory to /etc/vbox/vbox.cfg.

The installer must be executed as root with either install or uninstall as the first parameter. For example:

sudo ./VirtualBox.run install

Or if you do not have the sudo command available, run the following as root instead:

./VirtualBox.run install

Add every user who needs to access USB devices from a VirtualBox guests to the group vboxusers. Either use the OS user management tools or run the following command as root:

sudo usermod -a -G vboxusers username

The usermod command of some older Linux distributions does not support the -a option, which adds the user to the given group without affecting membership of other groups. In this case, find out the current group memberships with the groups command and add all these groups in a comma-separated list to the command line after the -G option. For example: usermod -G group1,group2,vboxusers username.