Monday, May 25, 2009

Millenium (ME): Cannot modify CONFIG.SYS

Even if additional file handles are needed by an MS-DOS-based program, the FILES setting does not function. Instead of the FILES setting, the PerVMFiles setting is used. This setting increases the number of available file handles in each MS-DOS virtual machine (VM) and is implemented by adding the following line to the [386Enh] section of the System.ini file:
PerVMFiles=number
In Windows Me, each MS-DOS VM is given the default FILES value of 30 file handles. The maximum number of file handles a VM can have is 255. Because the total number of file handles cannot exceed 255, the maximum PerVMFiles setting is 225. This value, plus the 30 made available by default, equals the maximum total of 255. You must restart Windows Me for this change to take effect.

Source:
How to Increase Available File Handles for MS-DOS-Based Programs in Windows Millennium Edition
http://support.microsoft.com/kb/269030

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