Jiaxun- So great to hear from you and thank you for the offer of help! I do have a serial port available. I seem to recall that I tried to enable backtracing the last go around but never got any output after a crash. I guess the serial console might be a way around that? Here are some previous discussions by various people trying to get NetBSD to work with various degrees of success on different versions: https://mail-index.netbsd.org/port-mips/2021/04/12/msg001011.html https://mail-index.netbsd.org/port-mips/2021/09/18/msg001139.html https://www.reddit.com/r/OldHandhelds/comments/yd7dco/nec_mobilepro_790_running_netbsd/ https://www.hpcfactor.com/forums/forums/thread-view.asp?tid=20759&start=1 Thank you, Michael