port-i386/42317: boot(8) menu fails while boot(8) prompt works

[Christoph_Egger%gmx.de@localhost]

>Number:         42317
>Category:       port-i386
>Synopsis:       boot(8) menu fails while boot(8) prompt works
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Nov 14 13:35:00 +0000 2009
>Originator:     Christoph Egger
>Release:        NetBSD-current/i386
>Organization:
>Environment:
>Description:

The machine has no PATA or SATA disks but one SCSI disk.
That means, hd0a refers to a SCSI disk.
Choosing any boot menu results into the input/error shown below.
But typing the same boot command on the prompt works.


>> NetBSD/x86 BIOS Boot, Revision 5.4 (from NetBSD 5.99.20)
>> Memory: 636/261056 k

     1. Boot normally
     2. Boot single user
     3. Disable ACPI
     4. Disable ACPI and SMP
     5. Drop to boot prompt

Choose an option; RETURN for default; SPACE to stop countdown.
Option 1 will be chosen in 0 seconds.
open netbsd: Input/output error
boot: hd0a: netbsd: Input/output error

Choose an option; RETURN for default; SPACE to stop countdown.
Option 1 will be chosen in 0 seconds.
type "?" or "help" for help.
> boot netbsd
8878400/


>How-To-Repeat:

Boot on a x86 machine with a SCSI disk.

>Fix: