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Maptitude Mapping Software

How do I enable the 3GB switch in Windows to
make more memory available to 32-Bit Windows?

You may want to make more memory available to Maptitude by enabling the 3GB switch on your 32-bit version of Windows Vista, Windows 7, or Windows 8 operating systems. While the 3GB switch may be a useful tool that allows you to access more memory for Maptitude, it should be mentioned that not all Windows updates or hardware and graphics drivers work well, or at all, with the 3GB switch enabled. If you experience any unexpected or abnormal behavior with the 3GB switch enabled, we recommend that you disable it and move to a 64-bit version of Maptitude (64-Bit Windows required).

To enable the 3GB switch:

  1. Right-click on the Command Prompt icon 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 the Command Prompt icon 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.

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