Microsoft DOS switches

Updated: 09/15/2017 by Computer Hope

About switches

Loaded in the config.sys switches allows you to add and remove various functions of MS-DOS.

Availability

The switches command is an internal command that is available in the below Microsoft operating systems.

All Versions of MS-DOS
Windows 95
Windows 98
Windows NT

Switches syntax

SWITCHES= /F /K /N /E[:n]

/F Skips the two-second delay after displaying the "Starting MS-DOS" message during startup.
/K Forces an enhanced keyboard to behave like a conventional keyboard.
/N Prevents you from using the F5 or F8 key to bypass startup commands. (SWITCHES /N does not prevent you from pressing Ctrl+F5 or Ctrl+F8 to bypass Drvspace.bin or Dblspace.bin; to prevent this, use the D**SPACE
/SWITCHES Command to add the SWITCHES /N setting to your D**space.ini file.)
/E[:N] Used without the :n parameter, indicates that Io.sys should suppress the automatic relocation of EBIOS. (Automatic relocation of EBIOS increases the conventional memory available to MS-DOS-based programs.) Suppressing automatic relocation results in less conventional memory available to MS-DOS-based programs. Use the /E switch with the n parameter to relocate N bytes of EBIOS to low memory, where n is the number of bytes to be relocated. The minimum value for n is 48 and the maximum value is 1024. The number specified is always rounded up to the next multiple of 16.

Additional information

  • See our switch definition for further information and related links on this term.