Re: Manual upgrade using base.txz

On Tue, 17 Sep 2024, at 11:29, Frank Leonhardt wrote:
> Assuming you know what you're doing with configuration files /etc/, 
> what would happen if you booted from a CD and simply unpacked base.txz 
> over the current configuration? Let's assume it's on ZFS or UFS2.

Yes, I do this frequently, so much that I wrote it down. It works
best with zfs and a clean boot environment.

https://people.freebsd.org/~dch/posts/2021-02-23-sideloading-freebsd/

it's clearly very mad scientist experimental, expect some breakage
as you merge various things. This guide was targeted at zfs, because
boot environments are incredible at reducing the pain.

Don't forget to keep your EFI partition / boot blocks up to date.
And something about backups, testing them.

A+
Dave