Re: portable USB disk installation

[David Brownlee <abs%absd.org@localhost>]

On Sun, 6 Oct 2019 at 14:03, Rhialto <rhialto%falu.nl@localhost> wrote:
>
> On Sun 06 Oct 2019 at 13:46:03 +0200, orr721 wrote:
> > Is there some way how to make the installation disk number
> > agnostic?
>
> Indeed there is! (But it is relativly new and not well advertised; you
> can find some documentation for it with `man getfsspecname`).
>
> In your /etc/fstab, you can use "ROOT." instead of the name of your
> disk, and then follow it with the partition letter. "ROOT." stands for
> the disk you booted from (or more precise, the disk where your / is).
>
> So instead of '/dev/sd0a' you would use 'ROOT.a', etc.

If you need to do this on older NetBSD systems you can setup a single
element autoconfiguring raidframe device (eg raid6) and have root on
raid6a - I've done that one NetBSD7 & 8. (If you are running a new
enough release to have ROOT though, don't bother faffing with
raidframe for this :-p)

David