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33037Re: [midatlanticretro] Help identifying MFM drive

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  • Cory Smelosky
    Oct 30, 2013
      On Thu, 31 Oct 2013, Dave McGuire wrote:

      > Well regardless of what it is, it's not going to work for much longer,
      > having been opened to air like that.

      Based upon the warranty label being broken, I doubt I was the first to
      open it.

      It may have not even worked before.

      > Kind looks like it might be a Rodime, but could be CMI.

      It's looking like CMI from a quick googling, but I could be wrong.

      > Keep in mind that, "formatting these for a PDP-11" can mean many
      > different things, depending on what controller you're using. Some
      > controllers, notably the DEC RQDX1 and RQDX2, cannot use drives of
      > arbitrary geometries. (at least from what I can remember)

      Can an RQDX3? I don't even quite know the geometries of this.

      Regardless, I'm out a whole $10. No big deal...I can track down an
      ST-225. It'll cost me more than $10, though. ;)

      > -Dave
      > On 10/30/2013 08:41 PM, Cory Smelosky wrote:
      >> Hello all,
      >> I'm looking in to a 20M drive I got on ebay for a whole $10. (not counting
      >> shipping).
      >> I need a little help identifying it...it seems to be CMI, unfortunately
      >> which hurts my plans for it a bit.
      >> http://www.youtube.com/watch?v=RzYtcJ25HeE
      >> Anyone have any experience with formatting these for a PDP-11? I'm
      >> assuming they're not even close to being compatible with an RD31 and that
      >> XXDP would need patched? (I need proper C/H/S info...I didn't get any)
      >> Alternatively, anyone want to trade this for an RD31/ST-225 if I can't
      >> make it work?

      Cory Smelosky
      http://gewt.net Personal stuff
      http://gimme-sympathy.org Projects
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