> -----Original Message----- > From: cctalk [mailto:[email protected]] On Behalf Of tony duell > Sent: Thursday, October 15, 2015 11:00 AM > To: General Discussion: On-Topic and Off-Topic Posts > Subject: RE: 8-sector decpacks? > > > Half density? I vaguely remember an RK05 style drive at half the density. > RK02? Or am I mixing it up with RP02 vs. > RP03? > > No, you're right. The RK02 is the low-density drive (actually a Diablo model > 30), the RK03 being the high density model. The RK05 has the same > bit density (heck the same format) as the RK03. > > > There was an RK01 I beleive. I forget who made that (it wasn't DEC, if you > see what I mean), but I could believe thst was low density too. > > -tony
That seems probable; the major reference I found was this: http://www.ultimate.com/phil/pdp10/dec.disks Which suggests that the RK02 is 12 or 16-sector; but it could be in error. (I've verified via DEC peripheral handbooks that, at least on the -11, the RK02 used 12-sector packs. I haven't yet found a handbook for the 8/I that covers the RK02 -- the one I have on my desk here is from 1972 and only talks about the RK01, so I guess it's a bit too early. Given the short life of the RK02, it may be tough to find the right one :). (The RK01 is 16-sector on the 8/I, FWIW.) - Josh
