The 1.5 version of Minix (1991) was available for the ATARI ST. The photo shows an ATARI MegaST2 machine with its 30 MB external hard disk and monochrome monitor. The Y1987 machine is still working today. As you can see no Y2K bug for Minix 1.5 on the Atari ST. 2 MB RAM, 8 Mz Motorola 68K.