Re: Interest in Add UEFI boot options project and some design questions

[Robert Elz <kre%munnari.OZ.AU@localhost>]

    Date:        Wed, 22 Apr 2026 07:26:29 +0200
    From:        Martin Husemann <martin%duskware.de@localhost>
    Message-ID:  <aehcBRUnuyQ84gcY%big-apple.aprisoft.de@localhost>

  | has other OSes installed - it may work by plain luck since other OSes
  | usually do not use the fallback path for the bootloader.

It can also work because there is no restriction on just one ESP per
drive (let alone per system).   All that NetBSD needs to do is create
an ESP of its own (which is what happened on all of my early EFI installs)
and it can safely use the default path without worrying about any other
OSes that happen to be installed in parallel - including other versions
of NetBSD (no issue having -10 -11 and HEAD all installed and bootable at
the same time, each with their own ESP, root, ... though this kind of setup
tends to require configuring "root NAME=whatever" in each systems boot.cfg,
and that needs to reside in its ESP).

Of course this gets much more manageable when a BOOT#### EFI var is installed
with a label that indicates which system each boots, rather than all being
just whatever the firmware provides as a default (along with whatever other
clues it might supply), and once we're doing that, everything can share one
ESP, just using different paths in it.

kre