Error Message If Laptop Is Ejected While Copying to Floppy Disk (197104)
The information in this article applies to:
- Microsoft Windows 95 OEM Service Release 2.5
- Microsoft Windows 95 OEM Service Release 2.1
This article was previously published under Q197104 SYMPTOMS
If you eject a laptop computer from the docking station while you are
copying a file to a floppy disk drive that is in the laptop computer, you
may receive the following error message on a blue screen, indicating that
a divide by zero error has occurred:
A fatal exception 00 has occurred at 0028:C0FD5A27 in VXD HSFLOP(01)
+ 00000A27. The current application will be terminated.
This error message may be followed by the following error message:
Disk Write Error
Unable to write to disk in drive A:
Data or files may be lost
CAUSE
This problem can occur if you have installed the update described in the
following article in the Microsoft Knowledge Base:
159153 Error Messages While Backing Up to Some Floppy Disk Drives
Note that the "Disk Write Error" message may occur even if the exception
does not. In either case, you should recopy the file.
The device enumeration required to match and verify the laptop computer's
hardware to the ejected-state hardware profile must temporarily insert
tracking structures into the floppy disk drive device control data; the
read/write operation still in progress interrupts the enumeration before
the data is fully initialized, resulting in the use of a zero divisor.
Some models of floppy disk drives require specific timing and delays
between disk operations to work properly. The timing implemented by the
Windows 95 floppy disk driver is not sufficient for some of these drives.
The changes introduced by the update noted above to accommodate these
drives result in the divide exception.
RESOLUTION
To work around this issue, Microsoft recommends that you wait for copy
operations to finish before ejecting a laptop computer from the base
station.
STATUS
Microsoft has confirmed this to be a problem in Microsoft Windows 95 OEM
Service Release versions 1, 2, 2.1, and 2.5, if the described update has
been installed.
This problem is corrected in Microsoft Windows 98.
| Modification Type: | Major | Last Reviewed: | 10/15/2003 |
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| Keywords: | kbprb KB197104 |
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