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This forum is part of our mission to promote the preservation of vintage computers through education and outreach. (In real life we also run events and have a museum.) We encourage you to join us, participate, share your knowledge, and enjoy.

This forum has been around in this format for over 15 years. These rules and guidelines help us maintain a healthy and active community, and we moderate the forum to keep things on track. Please familiarize yourself with these rules and guidelines.


Rule 1: Remain civil and respectful

There are several hundred people who actively participate here. People come from all different backgrounds and will have different ways of seeing things. You will not agree with everything you read here. Back-and-forth discussions are fine but do not cross the line into rude or disrespectful behavior.

Conduct yourself as you would at any other place where people come together in person to discuss their hobby. If you wouldn't say something to somebody in person, then you probably should not be writing it here.

This should be obvious but, just in case: profanity, threats, slurs against any group (sexual, racial, gender, etc.) will not be tolerated.


Rule 2: Stay close to the original topic being discussed
  • If you are starting a new thread choose a reasonable sub-forum to start your thread. (If you choose incorrectly don't worry, we can fix that.)
  • If you are responding to a thread, stay on topic - the original poster was trying to achieve something. You can always start a new thread instead of potentially "hijacking" an existing thread.



Rule 3: Contribute something meaningful

To put things in engineering terms, we value a high signal to noise ratio. Coming here should not be a waste of time.
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  • Use the Private Message system for posts that are targeted at a specific person.


Rule 4: "PM Sent!" messages (or, how to use the Private Message system)

This forum has a private message feature that we want people to use for messages that are not of general interest to other members.

In short, if you are going to reply to a thread and that reply is targeted to a specific individual and not of interest to anybody else (either now or in the future) then send a private message instead.

Here are some obvious examples of when you should not reply to a thread and use the PM system instead:
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Why do we have this policy? Sending a "PM Sent!" type message basically wastes everybody else's time by making them having to scroll past a post in a thread that looks to be updated, when the update is not meaningful. And the person you are sending the PM to will be notified by the forum software that they have a message waiting for them. Look up at the top near the right edge where it says 'Notifications' ... if you have a PM waiting, it will tell you there.

Rule 5: Copyright and other legal issues

We are here to discuss vintage computing, so discussing software, books, and other intellectual property that is on-topic is fine. We don't want people using these forums to discuss or enable copyright violations or other things that are against the law; whether you agree with the law or not is irrelevant. Do not use our resources for something that is legally or morally questionable.

Our discussions here generally fall under "fair use." Telling people how to pirate a software title is an example of something that is not allowable here.


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If you are unsure you may consider sending a private message to a moderator instead.


New user moderation

New users are directly moderated so that we can weed spammers out early. This means that for your first 10 posts you will have some delay before they are seen. We understand this can be disruptive to the flow of conversation and we try to keep up with our new user moderation duties to avoid undue inconvenience. Please do not make duplicate posts, extra posts to bump your post count, or ask the moderators to expedite this process; 10 moderated posts will go by quickly.

New users also have a smaller personal message inbox limit and are rate limited when sending PMs to other users.


Other suggestions
  • Use Google, books, or other definitive sources. There is a lot of information out there.
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38" computer disk recently acquired

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    38" computer disk recently acquired

    image.jpg

    Greetings
    I am an avid collector though not in computers. I recently purchased this 38" computer disc from the daughter of an engineer that either created it or used it at a US university. I would like to learn more about it but would also consider serious offers.

    Regards
    Alan
    Oldstone@northnet.org

    #2
    I'm not aware of anyone who collects unusable platters (and/or for exuberant amounts of money).

    Comment


      #3
      Really hard to say. Is there any markings or text?

      Here is a drive made by Bryant, the size is similar:


      And here is another:
      http://www.grandideastudio.com/portf...-coffee-table/

      I wouldn't mind it on my wall, but it would not be worth shipping.
      Looking for: anything from SGI or DEC/digital
      Pictures of my collection: www.pdp8.se

      Comment


        #4
        Originally posted by pontus View Post
        You have a 2 mega what? Ha ha, you'll never fill-up a 2MB hard disk..

        .
        Wanted: Sony CDU-535 or CDU6250 CD-ROM Drive (Caddy drive) for 8-bit Sony Interface Card
        sigpic <-- This is me using my IBM PC 5150 over Ethernet TCP/IP network with assignable drive letters

        Comment


          #5
          And just what would a serious offer be on what is either a steel or aluminum plate, with spindle hole, and coated in a magnetic recording surface? Bear in mind that something this awkward, would most likely have shipping that is prohibitive in cost?

          Originally posted by Urbancountryman View Post
          [ATTACH=CONFIG]17686[/ATTACH]

          Greetings
          I am an avid collector though not in computers. I recently purchased this 38" computer disc from the daughter of an engineer that either created it or used it at a US university. I would like to learn more about it but would also consider serious offers.

          Regards
          Alan
          Oldstone@northnet.org
          Nothing beats the roar of a 36yr old drive coming to life after a decade in storagg

          Comment


            #6
            That would make one large hard drive wall clock.

            Comment


              #7
              Originally posted by SomeGuy View Post
              That would make one large hard drive wall clock.
              With an air horn for the alarm.
              Looking to acquire: IBM 5100, Altair 8800

              Comment


                #8
                Originally posted by pontus View Post
                Really hard to say. Is there any markings or text?

                Here is a drive made by Bryant, the size is similar:

                Whoa, that thing is huge. I wonder how fast the disks spun, being that large.

                Comment


                  #9
                  Originally posted by Tr3vor View Post
                  Whoa, that thing is huge. I wonder how fast the disks spun, being that large.
                  900 or 1200 RPM
                  http://bitsavers.org/pdf/bryant

                  Comment

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