port-sh3/54141: landisk boot.fs unable to find kernel

[tr%vispaul.me@localhost]

>Number:         54141
>Category:       port-sh3
>Synopsis:       landisk boot.fs unable to find kernel
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-sh3-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Apr 28 09:10:00 +0000 2019
>Originator:     Travis Paul
>Release:        current as of Sat Apr 27 22:00:29
>Organization:
N/A
>Environment:
unable to boot and run `uname -a`
>Description:
Landisk (at least the boot.fs) is no longer booting, seems unable to find the kernel:

  NetBSD/landisk ustarfs Primary Bootstrap

  >> NetBSD/landisk Boot, Revision 1.0 (Sat Apr 27 22:00:29 UTC 2019)
  Press return to boot now, any other key for boot menu
  booting hd0a:netbsd - starting in 0
  9362892read section: Input/output error
  boot: hd0a:netbsd: Input/output error
  booting hd0a:netbsd.gz
  open netbsd.gz: No such file or directory 
  boot: hd0a:netbsd.gz: No such file or directory
  booting hd0a:netbsd.old - starting in 2

A current build from mid-March was working, re-tested NetbSD-8 and it boots as well.
>How-To-Repeat:
build or download landisk from current, write boot.fs to a Compact Flash card, attempt to boot.
>Fix:
Unknown