In message <20040521201142.GW7278@snowdrop.l8s.co.uk>, David Laight writes:
>> 
>> Ah -- that seems to be the problem.
>> 
>> 1: NetBSD (sysid 169)
>>     bootmenu: NetBSD
>>     start 21546000, size 56594160 (27634 MB, Cyls 1425-5168)
>> 
>>  a:    567000  21549780     4.2BSD   1024  8192 40504  # (Cyl.  21378*-  219
>41*)
>> 
>> 
>> Now to figure out how best to fix it...
>
>installboot to whatever is at the start.
>(or dd bootxx_ffsv1 aroung the netbsd label)
>the system will look for /boot there, then fall back onto 'a'

I tried using fdisk to change the start of the partition.  That was a 
mistake....  Fortunately, anticipating trouble, I made a level 0 backup 
first.  Took me about 36 hours to recover, what with other things to do 
and some apparent bugs in -current.

Is there a high-level wrapper around fdisk/disklabel other than sysinst?

		--Steve Bellovin, http://www.research.att.com/~smb