install/46027: First stage bootloader (bootxx_ffsv2) on i386 broken for Soekris net4801

[mbalmer%NetBSD.org@localhost]

>Number:         46027
>Category:       install
>Synopsis:       First stage bootloader (bootxx_ffsv2) on i386 broken for 
>Soekris net4801
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Feb 15 17:05:00 +0000 2012
>Originator:     Marc Balmer
>Release:        5.99.65
>Organization:
TNF
>Environment:
>Description:
A fresh install of NetBSD 5.99.65 on a Soekris Engineering net4801 with a 2 GB 
San Disk CF card, finished without problems.  When rebooting, however, the 
first stage bootloader resets the machine after printing the banner on the 
console (first and last line are from the soekris BIOS):

 1 Seconds to automatic boot.   Press Ctrl-P for entering Monitor.
NetBSD MBR boot

NetBSD/x86 ffsv2 Primary Bootstrap

Press return to boot now, any other key for boot menu
booting \ - starting in 0 seconds.     
> ls


POST: 0123456789bcefghipajklnopq,,,tvwxy 
>How-To-Repeat:
Boot from CF card.

>Fix: