Article: Q179897Product(s): Microsoft Windows 95.x Retail ProductVersion(s): 2,2.1Operating System(s): Keyword(s): kbhw osr2 diskmem win95 kbHardware kbDiskMemorykbfixlistLast Modified: 25-MAR-2002-------------------------------------------------------------------------------The information in this article applies to:- Microsoft Windows 95 OEM Service Release, versions 2, 2.1 -------------------------------------------------------------------------------SYMPTOMS========When you run multiple programs (especially MS-DOS-based programs) on aWindows-based computer that has insufficient system memory (RAM) and contains anIntel Pentium Pro or Pentium II processor, information in memory may becomeunavailable or damaged, leading to unpredictable results. For example, copy andcompare operations may not work consistently.CAUSE=====This behavior is an indirect result of certain performance optimizations in theIntel Pentium Pro and Pentium II processors. These optimizations affect how theWindows 95 Virtual Machine Manager (VMM) performs certain memory operations,such as determining which sections of memory are not in use and can be safelyfreed. As a result, the Virtual Machine Manager may free the wrong pages inmemory, leading to the symptoms described earlier.RESOLUTION==========STATUS======This problem no longer occurs in Windows 98. To resolve this problem, installthe current version of Windows. For information about the current version ofWindows, visit http://www.microsoft.com/windows.MORE INFORMATION================Additional query words:======================================================================Keywords          : kbhw osr2 diskmem win95 kbHardware kbDiskMemory kbfixlistTechnology        : kbWin95search kbOPKSearch kbWin95OPKOSR2 kbWin95OPKOSR210Version           : :2,2.1Issue type        : kbprb=============================================================================