This command sets the global Emergency Management Services settings for the system. Emssettings does not enable or disable ...

This command sets the global Emergency Management Services settings for the system. Emssettings does not enable or disable Emergency Management Services for any particular boot entry.  bcdedit /emssettings [ BIOS ] | [ EMSPORT: | [EMSBAUDRATE:] ]      BIOS        Specifies that the system will use BIOS settings for the                 Emergency Management Services configuration. This works only                 on systems that have Emergency Management Services support                 provided by the BIOS.            Specifies the serial port to use as the Emergency Management                 Services port. This should not be specified with the BIOS                 option.        Specifies the serial baud rate to use for Emergency Management                 Services. This command should not be specified with the BIOS                 option.  is optional, and the default is 9,600 baud.  Examples:  The following command sets the Emergency Management Services parameters to use BIOS settings:      bcdedit /emssettings BIOS  The following command sets the Emergency Management Services parameters to use com2: at 115,200 baud.      bcdedit /emssettings EMSPORT:2 EMSBAUDRATE:115200