Windows 9x reports errors when installing 512MB or more of physical RAM.
Affected versions: Windows 95, Windows 98, Windows 98 SE, Windows ME
None (July 14th 2001). Error is caused by faulty functions in VCACHE driver.
See Microsoft Knowledge Base Q253912 and Q184447.
Problem can be fixed by limiting memory range. You'll need to modify configuration files responsible for adressing RAM.
Two settings can be used to adress the problem. Both can be found in SYSTEM.INI
First workaround as described in Q181862 will limit memory usage of Windows 9x to 512MB
In section [386Enh] set the following line
Second workaround as described in Q108079 will limit memory usage of Vcache to 512MB
In section [Vcache] set the following line