Panic after updating from source

[Michael Sierchio]

Anyone can repeat what's in the handbook.  It may not be applicable in all
circumstances, as I noted before – as when you don't have console access.

It turns out that the formula I describe above works flawlessly for
12-STABLE to 13-STABLE upgrade:


   1. userland and kernel are on

   FreeBSD test-1.dbm.q2w.spin.pm 12.2-STABLE FreeBSD 12.2-STABLE
   stable/12-n232782-39e2c45679a GRAVITON  arm64


   1. Clear /usr/src and /usr/obj
   2. Make sure you have a working kernconf for the new OS (e.g., device
   random disappears in 13)
   3.

   git clone -b stable/13 --depth 1 https://git.freebsd.org/src.git /usr/src
   4.

   cp ~/GRAVITON /usr/src/sys/arm64/conf # my kernconf, mentioned in
   /etc/make.conf
   5.

   cd /usr/src
   6.

   ( make -j8 buildworld && make -j8 kernel && make installworld && reboot
   ) >& make.out &
   7.

   [ time passes ]
   8.

   ssh <machine>
   9.

   uname -a

FreeBSD test-1.dbm.q2w.spin.pm 13.0-STABLE FreeBSD 13.0-STABLE #0
stable/13-05e4a34e4 GRAVITON  arm64

-- 

"Well," Brahmā said, "even after ten thousand explanations, a fool is no
wiser, but an intelligent person requires only two thousand five hundred."

- The Mahābhārata