port-i386/60540: Netbsd 11 dosboot.com in ufs mode - not working

["dimitrisz%gmail.com@localhost via gnats" <gnats-admin%NetBSD.org@localhost>]

>Number:         60540
>Category:       port-i386
>Synopsis:       Netbsd 11 dosboot.com in ufs mode - not working
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Aug 04 22:10:00 +0000 2026
>Originator:     Dimitrios
>Release:        NetBSD 11.0
>Organization:
N/A
>Environment:
NetBSD old 11.0 NetBSD 11.0 (LEGACY) #0: Thu Jul 30 15:23:12 UTC 2026 mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/i386/compile LEGACY i386
>Description:
When using dosboot.com with ufs mode, I am unable to boot from the primary slave ide where netbsd 11 is installed. I am also unable to boot from the floppy used to install netbsd. 

Booting the kernel with dos boot from a dos partition works fine.

Steps:

enable interactive mode with -i

mode ufs
dev hd1:
boot returns 
booting hd1a:netbsd
open <default>: No such file or directory
boot hd1a:netbsd: No such file or directory
ls / returns No such file or directory

Insert NetBSD floppy (boot1.fs)

dev fd0:
ls / returns no such file or directory
boot returns no such file or directory

system is 486dx4-100, IDE VLB controller, primary master IDE is 8 GB SD card to IDE adaptor, split in 4 2 GB partitions, managed by EZ-drive. primary slave is 2 GB compact flash drive. secondary master is 2 GB compact flash drive.
>How-To-Repeat:
keep trying to use ufs mode
>Fix:
n/a