I have been informed that there is a bug in 4MLinux 30.1. The Linux kernel modules for VirtualBox are missing.
Solution:
Code:
wget https://sourceforge.net/projects/linux4m/files/30.0/addons/kernel-modules/addon_modules-vb-4.19.69-smp.tar.xz
zk.sh addon_modules-vb-4.19.69-smp.tar.xz
depmod
.