RK05 Diablo Data Systems Filesystem Hierarchy Standard OS/8 PDP-8/e Front panel A Commentary on the UNIX Operating System PDP-15 List of disk drive form factors RT-11 Timeline of binary prefixes Hard disk drive Research Unix
RK05 Diablo Data Systems Filesystem Hierarchy Standard OS/8 PDP-8/e Front panel A Commentary on the UNIX Operating System PDP-15 List of disk drive form factors RT-11 Timeline of binary prefixes Hard disk drive Research Unix