Date   : Sun, 09 Jun 1991 23:25:02 GMT
From   : baron!baron!pnet07!donm@nosc.mil (Don Maslin)
Subject: Brown Disk UHR-II floppy disks wanted

I am looking to locate and purchase some extra high density floppy disks
that were used in the Drivetec 320 drives, as in the Kaypro Robie and
the Kaypro 4X computers.  They were made by Brown Disk in Colorado and
were their model UHR-II.  (Maxell may also have made some.)  The disks
are a preformatted servo track type with usable space of 2.67 mb.  They
are 192 tpi, and were formatted with 17 512 byte sectors per track.  In
appearance, they are very much like the conventional 5.25" floppy except
for the notches in the jacket edge.  See crude representation below:
 
                      Drivetec drive floppy disk
              _________________________________________
              |                                       |
              |                                       |
              |                                       |
              |                                       |<-- No notch here
              |                                       |
              |                   _                   |
              |                  / \                  |
              |                  \_/                  |
              |                   _    O              |
              |                  / \                  |
              |                  | |                  |
  Retention   \                  | |                  |
  Notch       /                  | |                  |
              |                  | |                  |
              |         _        \_/                  |
              |________| |____________________________|
                        |
                        |-- Disk Identification notch
 
If anyone has any of these 'lovelies' or knows where some might be
found, I would surely be interested in hearing about it and making a bid
on them (always assuming that the quantities are not in the thousands!).
 
Thanks for you time.
                                              - don
 

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