Can’t install virtualbox in Arch
Since version 5.0.16, virtualbox-host-modules-arch and virtualbox-host-dkms use systemd-modules-load.service to load all four VirtualBox modules at boot time. To load the module manually, run: modprobe vboxdrv https://wiki.archlinux.org/index.php/VirtualBox#Load_the_VirtualBox_kernel_modules