This is a core system (only a few MB in size) for the 4MLinux 20.0 series. The system includes: the Linux kernel 4.4.17, GNU C Library 2.23, and BusyBox 1.25.0. The 4MLinux 20.0 series uses GNU Compiler Collection 6.1.0 to compile programs designed for the i686 architecture.
This is the first 4MLinux live CD, which can also be run on UEFI machines (with both 32-bit and 64-bit firmware !).