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IBM PS/2 model 50 (8550) hard drive options

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    IBM PS/2 model 50 (8550) hard drive options

    I received an IBM PS/2 model 50 (8550) without a hard drive.

    I have three other untested ESDI IBM manufactured hard drives that I thought would work with the DBA connector.

    However, I plugged the drive into the MCA hard and the computer didn't boot. I came to find out that the connectors must be incompatible as the DBA connectors on the drives I have are smaller than the connector on the MCA card. The MCA controller has this number on it 6127873b.

    1. Is there any type of adapter to adapt these smaller sized DBA connectors to one that would work on the MCA controller in the PS/2?

    2. Failing that, is there a different MCA hard drive controller that would work for the PS/2 that would accept these drives with the smaller DBA connector?

    3. Or, is getting a SCSI card a solution if neither of those options work?

    It's a shame I don't know for sure if these hard drives I have work.

    Last edited by offensive_Jerk; February 26, 2015, 07:43 AM.
    I have a Major in Post-Apocalyptic Economics.
    Wanted: Any PC-Compatible Reciprocation Dingle Arm

    #2
    There are no adapters or converters but some people do have spare drives.
    [Need something to waste time on? Click here to visit my YouTube channel CelGenStudios]
    --------------------------------------------------------------------------------------------
    [No time for videos? Click here to visit my Twitter feed @CelGenStudios]

    = Excellent space heater

    Comment


      #3
      Originally posted by NeXT View Post
      There are no adapters or converters but some people do have spare drives.
      Of course I omit the most obvious and easiest option, haha. I am looking for the cheapest option.
      I have a Major in Post-Apocalyptic Economics.
      Wanted: Any PC-Compatible Reciprocation Dingle Arm

      Comment


        #4
        I can send you a drive for the price of shipping but I have not tested any of them in almost ten years. At least when I put them away they worked.
        [Need something to waste time on? Click here to visit my YouTube channel CelGenStudios]
        --------------------------------------------------------------------------------------------
        [No time for videos? Click here to visit my Twitter feed @CelGenStudios]

        = Excellent space heater

        Comment


          #5
          PM'ed you.
          I have a Major in Post-Apocalyptic Economics.
          Wanted: Any PC-Compatible Reciprocation Dingle Arm

          Comment


            #6
            Bump. Anyone know which type of hard drive I need? I keep getting drives that have connectors that are either too big or too small. I have a box full of drives that are useless to this computer.
            I have a Major in Post-Apocalyptic Economics.
            Wanted: Any PC-Compatible Reciprocation Dingle Arm

            Comment


              #7
              Originally posted by NeXT View Post
              There are no adapters or converters
              Nor homebrew interfaces that work with microchannel.

              Every time I have the urge to rescue a microchannel system, "what will I do for storage?" prevents me from doing so.
              Offering a bounty for:
              - A working Sanyo MBC-775 or Logabax 1600
              - Music Construction Set, IBM Music Feature edition (has red sticker on front stating IBM Music Feature)

              Comment


                #8
                Originally posted by offensive_Jerk View Post

                I have three other untested ESDI IBM manufactured hard drives that I thought would work with the DBA connector.
                All of the ones you have the IBM proprietary 44 pins connectors.?
                If you are interested in selling I'm looking for one.
                Last edited by Sega; February 1, 2016, 12:55 PM.

                Comment


                  #9
                  Originally posted by Trixter View Post
                  Nor homebrew interfaces that work with microchannel.

                  Every time I have the urge to rescue a microchannel system, "what will I do for storage?" prevents me from doing so.
                  The later Microchannel PS/2s used SCSI, and eventually IDE.

                  Comment


                    #10
                    Originally posted by Trixter View Post
                    Nor homebrew interfaces that work with microchannel.

                    Every time I have the urge to rescue a microchannel system, "what will I do for storage?" prevents me from doing so.
                    What all would be involved in creating a microchannel card? Just wondering if there's any reasonable way to port the XT-IDE design over to the MC bus...?

                    Wesley

                    Comment


                      #11
                      Hopefully you get a drive sorted. I think the reason the ESDI drives don't fit is because the Model 50 used a "direct bus attachment".
                      Well that's how I remember it, no references, just what my head is telling me.

                      Hopefully you find a matching drive - I suspect that'll be a lot cheaper than MCA SCSI.
                      Twitter / YouTube

                      Comment


                        #12
                        Originally posted by offensive_Jerk View Post
                        Bump. Anyone know which type of hard drive I need? I keep getting drives that have connectors that are either too big or too small. I have a box full of drives that are useless to this computer.
                        I thought you said the drive I mailed you last year worked??? I swear we compared the interface width to my drives and determined I had the proper drive for you before I packaged it and mailed it out. If that wasn't the case you could of PM'd me back about it. :P
                        Last edited by NeXT; February 2, 2016, 08:04 PM.
                        [Need something to waste time on? Click here to visit my YouTube channel CelGenStudios]
                        --------------------------------------------------------------------------------------------
                        [No time for videos? Click here to visit my Twitter feed @CelGenStudios]

                        = Excellent space heater

                        Comment


                          #13
                          Originally posted by NeXT View Post
                          I thought you said the drive I mailed you last year worked??? I swear we compared the interface width to my drives and determined I had the proper drive for you before I packaged it and mailed it out. If that wasn't the case you could of PM'd me back about it. :P
                          No, I thought they would work but they were too small by like two pins. I didn't email you back about it because it wasn't your fault, and there's not really much you could have done. You gave me the drives free for the price of shipping, so I wasn't going to ask for a refund or anything.

                          Here's some more pics.

                          24508826800_2b8d63fef1_z.jpg24686517462_66f749a4e6_z.jpg24686517462_e8ca3c075c_k.jpg
                          I have a Major in Post-Apocalyptic Economics.
                          Wanted: Any PC-Compatible Reciprocation Dingle Arm

                          Comment


                            #14
                            Originally posted by offensive_Jerk View Post

                            [ATTACH=CONFIG]29379[/ATTACH][ATTACH=CONFIG]29380[/ATTACH][ATTACH=CONFIG]29381[/ATTACH]
                            In the words of Napoleon Dynamite....lucky! . Those are the ones I'm in need of

                            Comment


                              #15
                              I still have Drive #2 available. "Worked when pulled" from a Model 50Z.

                              http://www.vintage-computer.com/vcfo...read.php?26830

                              Comment

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