Maybe switching the loader to "comconsole" works? What is the real serial device behind your console?
https://lists.freebsd.org/archives/freebsd-current/2024-September/006455.html For one of my boards eficonsole pauses the boot loader IF anything is connected to it : https://lists.freebsd.org/archives/freebsd-arm/2023-March/002433.html Maybe switching to the com console early can work for you... Marcin
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