Hello Paul, What do you mean by "every single boot time message" ? If you are dealing with the kernel output during boot, and before the "init" process, the destination is selected in the configuration between the BIOS console, the direct console and the serial console in the "Character device drivers" sub-menu, option "Select console driver". In default configuration, the output goes to the direct console. See the init_console() function in the source for more details. Regards, MFLD Le 23/08/2018 à 18:25, Paul Osmialowski a écrit : > Hello, > > I've paid brief visit to my old flat so I could play with ELKS on real XT > thing again. This time I brought null-modem cable with me. Unfortunately, > ELKS doesn't seem to send anything over serial port. Can it be configured > to send every single boot time message over /dev/ttyS0 or (even > better as I have serial mouse) to /dev/ttyS1? > > Regards, > Paul >