Floppy Drive Problems

·        Floppy Drive is not ready even though a disk is inserted (a:\ is not accessible).

 

·        When Floppy Disk is changed, the system continues to see the first one.

 

·        What is Floppy Mode 3 in BIOS?

Floppy Drive is not ready even though a disk is inserted (a:\ is not accessible).

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·        Be sure the CMOS Setup Utility is set correctly for your Floppy Drive (most are 3 1/2 inch, 1.44 MB).

 

·        If you have more than one Floppy Drive, check that Floppy Drive Swapping is not enabled in CMOS.

 

·        Check if the floppies are Write-Protected.  Just look at the back of the floppy with the metal door oriented downwards, so you can check the position of the sliding Write Protect Tab in the upper-left hand corner.  The tab positions are usually labeled in writing as “Safe” or “Write”, or with an icon of a “Locked Lock” or “Unlocked Lock”.  In either case, if you can see through the disk through the tab hole, it is Write Protected.  Just slide the Tab to the other position and try accessing the disk again.

 

·        In Windows Explorer, right-click the Floppy Drive and format the floppy with the “transfer system files” option selected.

 

·        Try another Floppy Drive.

 

·        Replace the Floppy Cable, sometimes they get nicked.  Be sure that the motherboard end (un-twisted end) of the new Floppy Cable matches the motherboard connection.  Sometimes the location of the “blank” pin is in different location and you may bend or damage the pins on the motherboard floppy connector if you try to force it on.

 

·        If the Floppy Drive LED stays on all the time, you have the Floppy Cable plugged in backwards on either the motherboard or the Floppy Drive end; the red stripe goes to pin 1.  Also ensure that the end with the “twist” is connected to the Floppy Drive.  Of course this problem only occurs during new installations, or after you have already attempted to reseat or replace the Floppy Cable.

 

·        You could have a bad box of Floppy Disks.  Try one of the suspect floppies in another computer.  Be sure to use a virus scanner before attempting to open any files on the disk.

 

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When Floppy Disk is changed, the system continues to see the first one.

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The Floppy Disk Drive Phantom Directory Problem

 

Symptoms:  When a floppy disk is inserted into floppy disk drive and the directory is displayed, the directory of the floppy that was previously in the drive is displayed.

 

Caution:  Writing to the second floppy will damage the data on it.  The write also writes part or all of the previous floppy's FAT and directory sections.

 

Background: Pressing the eject button to remove the previous floppy normally sends a Disk Change (DC) signal to the floppy drive controller.  If the signal does not get to the controller or the controller is defective, the operating system will not flush the floppy cache'.

 

Temporary fix: Press Ctrl-C in DOS right after inserting the floppy.  That should flush the cache'.

 

Troubleshooting:

 

1. Reseat the floppy cable at both ends.

2. Replace the floppy cable.  To verify, Check pin 34 continuity.

3. Make sure the pins labeled DC on the floppy drive printed circuit board are jumpered.

4. Dirty (or bad) disk change sensor or LED.  Remove floppy, gently open door, and blow dust out of the drive.  Carefully clean through floppy door with cotton swab and isopropyl (rubbing) alcohol (use sparingly; keep away from heads).

5. Bad floppy drive printed circuit board.  Replace drive.

6. Bad floppy disk controller (part of the motherboard now-a-days).   Find a controller card (good luck!), replace the motherboard, or go without.

 

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What is Floppy Mode 3 in BIOS?

This is a special 3-1/2" 1.2 MB Floppy used in Japan.

 

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