NEWS-OS Release 4.1R Version Up Kit 1991 Sony The floppies can boot on both CISC and RISC systems due to some bootloader magic, but the MO image is only for the first wave of RISC NEWS machines (NWS-3000 series) NEWS-OS Release 4.2.1aRD Installation Kit 1993 Sony Usable only on NWS-5000 series computers