NanoBSD disable serial console redirection / 2.3.1

[pfsense_user_123]

Hi,
How Can I disable serial console redirection on ALIX (nanobsd) ?
I want to user serial port for something else.
I remember that this "check box" was available in previous versions in System=>Advanced=>redirect serial console…

But in new version... no luck :-(

loader.conf is overwritten after reboot to default settings.

cat /boot/loader.conf

loader_color="NO"
beastie_disable="YES"
autoboot_delay="1"
boot_serial="YES"
console="comconsole"
comconsole_speed="115200" hw.usb.no_pf="1"

[cmb]

That option to enable/disable only exists on full installs, serial nano forces serial console on. The difference you're seeing is that 2.3.1+ correctly applies the console config where mismatched during boot. There isn't currently a way of disabling that, short of modifying the source. That wasn't a use case we anticipated, you're the first I've heard of doing that.

[robi]

+1 for this.
I want to use the single serial port on my device using NanoBSD as a GPS-timed NTP server, and NTP keeps complaining that /dev/cuau0 is busy.
How to free up the serial port?