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Thread: 3 1/2" Floppy Drive Testing

  1. #1
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    Default 3 1/2" Floppy Drive Testing

    Before I pitch these 5 3 1/2" floppy drives wanted to ask if there was anything else I could test. None of them will read a known good floppy disk and I have done the following to each to try and fix them

    Took Off Covers
    Cleaned the Drive Heads with 99% isopropyl and gave them ample time to dry
    Lubricated the Rails with Silicone Lubricant
    Cleaned the insides of the drive with compressed air and a q-tip

    When connecting up the drives to a known good controller (tested with working drive), the drive sled moves up and back on floppy seek during post and there are no errors, but once DOS is fully booted and you try to read a disk in the drive, the sled doesnt move and the standard Error Reading Floppy message comes up....
    "In Life, The Days Are Long But The Years Are Short..."

  2. #2
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    Did you create (i.e. format and write) those floppies on the same drive?

    Also, did the drives ever work in your system? (configuration error possibility)

  3. #3

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    Are they HD or DD drives?
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  4. #4
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    Quote Originally Posted by Stone View Post
    Are they HD or DD drives?
    yeah, this... if it's an HD drive, feel free to pitch them.. DD drives are harder to come by, ESPECIALLY if they have the drive jumpers, so keep those.
    -- Brian

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  5. #5
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    They are all HD Drives
    I couldnt create and write the good floppies on these drives, they wont read the disk. The sled doesnt move when I try to access the drive, but moves fine on floppy seek.

    I know I could just toss them but wasnt sure if there was something I could do (if just for fun) to try and fix them.....and learn more internally as I go.

  6. #6
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    Have you played with IMD with these drives? It allows you to perform a lot of low-level access.

  7. #7
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    Check for jumpers. Particularly RDY / DC should be on DC and MM / MS should be on MM. If a newer drive, then there may not be any jumpers. Also make sure DS is set to 1 (assuming a PC)

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