Enabling 3GB switch on Windows Vista™ or Windows 7

Enabling 3GB switch on Windows Vista™ or Windows 7


Published date: 2010-May-27
ID: TS1069947

Applies to:
AutoCAD® 2011
AutoCAD® 2010
AutoCAD® 2009
AutoCAD® 2008
AutoCAD® Architecture 2011
AutoCAD® Architecture 2010
AutoCAD® Architecture 2009
AutoCAD® Architecture 2008
AutoCAD® Civil 3D® 2011
AutoCAD® Civil 3D® 2010
AutoCAD® Civil 3D® 2009
AutoCAD® Civil 3D® 2008
AutoCAD® Electrical 2011
AutoCAD® Electrical 2010
AutoCAD® Electrical 2009
AutoCAD® Electrical 2008
AutoCAD® Inventor® Professional Suite 2011
AutoCAD® Inventor® Professional Suite 2010
Autodesk® Inventor™ Professional 2009
Autodesk® Inventor™ Professional 2008
AutoCAD® Inventor® Suite 2011
AutoCAD® Inventor® Suite 2010
Autodesk® Inventor™ Suite 2009
Autodesk® Inventor™ Suite 2008
AutoCAD® Land Desktop 2009
AutoCAD® Land Desktop 2008
AutoCAD® Map 3D 2011
AutoCAD® Map 3D 2010
AutoCAD® Map 3D 2009
AutoCAD® Map 3D 2008
AutoCAD® Mechanical 2011
AutoCAD® Mechanical 2010
AutoCAD® Mechanical 2009
AutoCAD® Mechanical 2008
AutoCAD® MEP 2011
AutoCAD® MEP 2010
AutoCAD® MEP 2009
AutoCAD® MEP 2008
AutoCAD® P&ID 2010
AutoCAD® P&ID 2009
AutoCAD® P&ID 2008
AutoCAD® Plant 3D 2009
AutoCAD® Plant 3D 2010
AutoCAD® Revit® MEP Suite 2011
AutoCAD® Revit® MEP Suite 2010
AutoCAD Revit MEP Suite 2009
AutoCAD Revit MEP Suite 2008
Autodesk® Inventor® 2011
Autodesk® Inventor® 2010
Autodesk® Inventor™ 2009
Autodesk® Inventor™ 2008
Autodesk® Revit® Architecture 2011
Autodesk® Revit® Architecture 2010
Revit® Architecture 2009
Revit® Architecture 2008
Autodesk® Revit® Structure 2011
Autodesk® Revit® Structure 2010
Revit® Structure 2009
Revit® Structure 2008
Autodesk® Vault 2009
Autodesk® Vault 2008

You want to enable the 3GB switch on the Windows Vista™ or Windows 7 operating systems.

To enable the 3GB switch on Windows Vista™ or Windows 7:

  1. Right-click Command Prompt in the Accessories program group of the Start menu. Click Run as Administrator.
  2. At the command prompt, enter "bcdedit /set IncreaseUserVa 3072"
  3. Restart the computer.

To disable the 3GB switch:

  1. Right-click on Command Prompt in the Accessories program group of the Start menu. Click Run as Administrator.
  2. At the command prompt, enter "bcdedit /deletevalue IncreaseUserVa"
  3. Restart the computer.

For more information on the 3GB switch, refer to the following Microsoft MSDN article:

http://msdn.microsoft.com/en-us/library/ff556232.aspx

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