4 May
2008
4 May
'08
3:59 a.m.
Confusingly, the 1e manual for /dev/rk0 says its an
RK03. I'll have to go
read the DEC manuals, but I would guess that the RK11 drive and interface is
the same, but the RK03 and RK05 removable disk packs were of different
storage capacity.
The controller is an RK11.
The disk drives are RK02, RK03, RK05.
The RK02 is a 1.2MB drive (256B per sector).
The RK03 is a 2.4MB drive (512B per sector).
The RK05 is a 2.4MB drive (512B per sector).
The media for the RK03 and RK05 are compatible (IBM 2315). The drives
look different from each other, but I don't think the system can tell
the difference.
James Markevitch