DOCUMENT:Q159153  20-MAY-2002  [win95x]
TITLE   :Error Messages While Backing Up to Some Floppy Disk Drives
PRODUCT :Microsoft Windows 95.x Retail Product
PROD/VER::1.0,2.0,2.1,2.5
OPER/SYS:
KEYWORDS:kberrmsg kbhw kbpolicy osr1 osr2 win95 kbHardwarekbfixlist

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The information in this article applies to:

 - Microsoft Windows 95 
 - Microsoft Windows 95 OEM Service Release, versions 1.0, 2.0, 2.1, 2.5 
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SYMPTOMS
========

When you are using Microsoft Backup to back up data to certain models of floppy
disk drives, you may receive the following error messages:

   Warning: Tape needs to be erased before operation can proceed.

   Microsoft Backup unable to read from the disk or network drive. Quit and
   restart Backup, and then try again.

   Warning: This operation has been canceled by the system.

CAUSE
=====

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.

RESOLUTION
==========


STATUS
======

This problem no longer occurs in Windows 98. To resolve this problem, install
the current version of Windows. For information about the current version of
Windows, visit http://www.microsoft.com/windows.

MORE INFORMATION
================

There are two separate timing issues known to relate to this symptom:

 - Some floppy disk drives require a specific minimum delay time after a Write
   operation, before a Step operation can occur.


 - Some floppy disk drives require a specific minimum head-settling time between
   a Seek and subsequent Write operation.


In each of these cases, the delay required by the drive is greater than the
Windows 95 floppy disk driver implements.


Additional query words:

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Keywords          : kberrmsg kbhw kbpolicy osr1 osr2 win95 kbHardware kbfixlist
Technology        : kbWin95search kbOPKSearch kbZNotKeyword3 kbWin95OPKOSR25 kbWin95OPKOSR210
Version           : :1.0,2.0,2.1,2.5
Issue type        : kbprb

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