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Chapter 25. Maintaining and Optimizing S... > Configuring the MS-DOS Environment

Configuring the MS-DOS Environment

If you still use DOS programs, you'll be glad to know that the DOS environment that Windows XP uses is highly configurable. I discussed the Virtual DOS Machine or VDM in the previous section. It provides a simulated MS-DOS computer environment in which your old DOS applications run. It's also run “underneath” the simulated Windows 3.x environment, so it's used by old 16-bit Windows applications as well. You can configure it in several ways:

  • By configuring the user variables in the System dialog box, as discussed in the section “Setting Environment Variables.”

  • By making selections from the DOS window's Control menu.

  • By making settings in the Properties sheet for a shortcut to the DOS application.

  • By setting up custom AUTOEXEC.NT and CONFIG.NT configuration files you can address most special memory or environment variable setting requirements a DOS program might have.

  • By entering environment-altering commands at the command prompt.


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