Date: Mon, 25 Sep 2023 09:45:25 -0000 (UTC)
From: mlel...@serpens.de (Michael van Elst)
Message-ID: <uerkrk$80f$1...@serpens.de>
| There can be multiple EFI system partitions on a drive,
That was my understanding from reading the spec.
| but it sometimes confuses software,
What can I say to that...
| some boot procedures will only handle the first ESP.
See my reply to RVP's reply just below.
| But you "should" be able to select an ESP in UEFI just like you would
| select a boot device in BIOS.
There's no problem picking the correct ESP from which to load efibootx64.efi
(or whatever the magic name is) - that part works fine, and if I have multiple
ESPs with NetBSD's efiboot in them I can pick whichever one I want (I think,
which probably gives me another option for testing updated efiboot code).
It is just boot.cfg which is giving problems.
r...@sdf.org said:
| The first EFI partition. Without a bootme etc., flag, the NetBSD UEFI
| bootloader tries to read /EFI/NetBSD/boot.cfg from there, first.
I wondered about that when I saw Edgar's first message earlier, it
suddenly occurred to me that I normally never go near that ESP (that one
was set up by the system builders to boot wintrash - a subject which has
no interest to me, but I have retained intact (just reduced the size of the
wintrash partition) so it can be used for repairs, which I suspect is what
just happened.
So, I went and checked, but it turns out that I was (apparently) very
thorough when I was scattering boot.cfg files around, I discovered that
I have:
./EFI/Boot/boot.cfg
./EFI/NetBSD/boot.cfg
./EFI/boot.cfg
./boot.cfg
(that is relative to /mnt where I briefly temporarily mounted that parition).
None of those are used... (there's no NetBSD boot code there, EFI/Boot
is a wintrash boot directory, but the boot.cfg file doesn't seem to bother
that).
| I've hacked my bootloader locally to make it try a /EFI/NetBSD/boot.cfg on
| the partition where it itself was loaded from
I'd suggest that's what it should always attempt first, absent other info,
rather than being a local hack for you.
kre
