How can I change a COM port via CMD?

[Tripredacus]

I am trying to determine how to change a COM port via CMD or other potential methods. I have tried using change port/chgport but it returns to me an error:

Unable to create mapping for port COM1. Error Code = 0x2

chgport COM1=COM2

This is the /query output:

AUX = \DosDevice\COM1COM1 = \Device\Serial0

Am I using this command incorrectly? I am logged in directly to the PC, physical not VM.

[Yzöwl]

I'm not sure of your intention but it appears to me that you are trying to map COM2, (which doesn't exist in your query), to COM1 (which already exists).

I thought that the idea of this command was to be able to utilise ports other than COM1, COM2, COM3 and COM4 because they were the only ones supported by MS-DOS programs.

CHGPORT COM6=COM1 maps COM6 to COM1 such that COM6 can be utilised by the DOS program as COM1.

[Tripredacus]

Oh so I had it backwards! Duh