From: Stuart Henderson <stu@spacehopper.org>
Subject: Re: openbsd fde serial redirect not working after 7.3
To: David Hill <dhill@mindcry.org>, <tech@openbsd.org>
Date: Tue, 13 Aug 2024 21:12:47 +0100

Instead bootblocks from 7.3 or newer first. The kernel interface for 
passing console information was changed and backwards compatibility for old 
boot loaders was removed quickly, after only one release. Several 
developers discovered this the hard way.

-- 
  Sent from a phone, apologies for poor formatting.

On 13 August 2024 15:22:34 David Hill <dhill@mindcry.org> wrote:

> Hello -
>
> I have an OpenBSD 7.0 amd64 machine with FDE I'd like to upgrade to 7.5.
>  However, serial redirect is not working booting 7.5 bsd.rd.  It also
> doesn't work with 7.4 bsd.rd.  7.3 works though.
>
> Not sure if this is a bug, if I need to upgrade differently.  Do I need
> to upgrade to 7.3 first?
>
> This is via serial ..  7.3 bsd.rd vs 7.4 bsd.rd
>
> >> OpenBSD/amd64 BOOT 3.53
>
>
> boot> boot sr0a:/bsd.rd.73
>
>
>
>
>
> Passphrase:
> booting sr0a:/bsd.rd.73: 3924676+1647616+3886216+0+704512
> [109+440424+293778]=0xa667f0
>
>
> entry point at 0xffffffff81001000
>
>
> Copyright (c) 1982, 1986, 1989, 1991, 1993
>
>
> The Regents of the University of California.  All rights reserved.
>
>
> deraadt@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/RAMDISK_CD
>
>
> Copyright (c) 1995-2023 OpenBSD. All rights reserved.
> https://www.OpenBSD.org
>
>
> OpenBSD 7.3 (RAMDISK_CD) #1063: Sat Mar 25 10:41:49 MDT
>
> ...
>
> >> OpenBSD/amd64 BOOT 3.53
>
>
> boot> boot sr0a:/bsd.rd.74
>
>
>
>
>
> Passphrase:
>
>
> booting sr0a:/bsd.rd.74: 3969732+1655808+3886664+0+708608
> [109+444888+297417]=0xa76798
>
>
> entry point at 0xffffffff81001000
>
> * no output *
>
>
>
>
> Thanks,
> David