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is there any design for an

Discussion in 'Electronic Design' started by [email protected], Sep 10, 2006.

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  1. Guest

    electronic circuit that can read any hard disk from any firm
    available?? if yes which?
     
  2. Donald

    Donald Guest

    There is not enought information here.

    Are SCSI hard disks in the 'any hard drive' ?
     
  3. Guest

    At software level..?, interface (ata/scsi/st506/esdi)..? header..?
     

  4. Define "Any hard disk".


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     

  5. shellac, acetate, non drop frame of course!


    martin
     
  6. A rigid plate.
     
  7. does "round" come into the spec?


    martin
     
  8. Not when you translate from Norwegian (no shit)!
     

  9. Actually, I was thinking about the single 40" 5 MB disc with a three
    horse, three phase mother that ran the automated Armco Steel mill in
    Middletown, Ohio for 25 years, from about 1961, till the computer system
    was replaced and scrapped out in 1986. I ended up with the three phase
    breaker box and motor controller, along with the warning plate that
    warned "Do not attempt to read or write to the drive for at least five
    minutes after power is applied". It took a fork lift to move the
    drive. the computer system was replaced after the drive could no longer
    be repaired, and their spars from other companies were all worn out.


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  10. Guest

    i would like it to read SCSI disks also but IDE and SATA would be great
     
  11. Guest

    i would like it to be in hardware level if posible
    but if there is a software solution that can make a tiking hard disk
    aline again or a burned controler work that would do
     
  12. Guest

    what it there to define ?
    a hard disk with any capacity from any firm
     
  13. There are two, er three, levels to the connections, physical,
    electrical, and protocol.

    Physical involves the actual connectors, of which there are waay too
    many-- 50-pin IDC, 40-pin IDC, USB, firewire, 37-pin, 80-pin IDC,
    fiber, and probably many more.

    Electrical concerns the signaling method:: TTL, optical, xxx-ohm flat
    cable, twisted pair, single-ended, differential, 5-volt swing, 3.3 volt
    swing, LDVT. Also the data rate-- be it 5, 10, 20, 66, 150, or 266
    megabits epr second. Also now parallel or serial.


    Protocol concers how the data bits and handshaking is specified-- 8,
    16, 32, 64 bits width, IDE or SCSI or fiber protocol.


    So there's scads of variations. USUALLY controller cards can take one
    or at ost a very few vaiations on a theme. For instance many PC
    motherboards can accept a variety of IDE drives, 40 or 80 pin, slow to
    fast. But not anything else. Similarly most SCSI controllers will
    accept a range of speeds, but not other speeds, and one or two
    conn3ctor styles, but not the others, and one or two signaling levels,
    but not others.

    so in general, NO.

    One exception are the special machins specially designed to test and
    exercise disk drives, these often accept a much wider variety of disks.
    Google for "disk drive testers" for more info.
     

  14. You have a LOT to learn about hard drives.


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  15. Guest

    i want to learn can you please teach me or direct me to somone who can?
     
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