When you redirect the direct console to a serial port by setting the boot options, the change does not persist for subsequent boots.

Verify that the serial port is not in use for serial logging and debugging.

1

Start the host.

2

When the Loading VMware Hypervisor window appears, press Shift+O to edit boot options.

3

Disable the logPort and gdbPort on com1 and set tty2Port to com1 by entering the following boot options:

"gdbPort=none logPort=none tty2Port=com1";

To use com2 instead, replace com1 with com2.

The direct console is redirected to the serial port until you reboot the host. To redirect the direct console for subsequent boots, see Redirect the Direct Console to a Serial Port from the vSphere Web Client