packaged kernel not booting following an upgrade (was: Questions about pkgbase)

Reply: Yasuhiro Kimura : "Re: packaged kernel not booting following an upgrade"
In reply to: Yasuhiro Kimura : "Re: Questions about pkgbase"
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From: Graham Perrin <grahamperrin_at_gmail.com>
Date: Sun, 05 Oct 2025 09:55:10 UTC

<https://lists.freebsd.org/archives/freebsd-current/2025-October/009018.html>

On 05/10/2025 02:20, Yasuhiro Kimura wrote:

> … `pkg upgrade`. Then what should we
> do if system fails to boot with new kernel? Do we have to create boot
> media and boot from it? Assuming that we have no choise but to do so,
> how should we restore the system? …


An option:

Using pkgbasify to repair a broken installation of FreeBSD 14.3-RELEASE
<https://gist.github.com/grahamperrin/9570092c127bd43777961b6f016e75ba#file-freebsd-installer-pkgbasify-md>

The method there may be adapted for 16.0-CURRENT.

If a non-bootable kernel is from base_latest, then I would hope to find 
a usable base (with a bootable kernel) in base_weekly.