Subject: Re: sysinst report [was: 1.3Beta]
To: Jonathan Stone <jonathan@DSG.Stanford.EDU>
From: Ken Hornstein <kenh@cmf.nrl.navy.mil>
List: port-i386
Date: 12/05/1997 14:53:02
(I've taken current-users off of the cc line, since this is a i386-only
thing).
>>6. I messed up a bit and reloaded several times (on the same boot),
>> once from the initial menu option -- specifying the disk geometry
>> options and several times from the upgrade menu option. I also
>> had an old disklabel in the NetBSD partition when I started. But I did
>> get the system to extract into root & /usr. When I rebooted, I
>> discovered that my MBR was 0. THIS SHOULD NEVER BE POSSIBLE. The
>> install should always check to make sure that the mbr looks plausible
>> before it is written. Luckily, I had the contents written down, so
>> I could use pfdisk and fdisk /mbr to recover.
>
>Appalling.
You know, when doing my most recent install, I almost did this ... and
I think that I understand part of the problem.
I have a SCSI controller, and I have translated BIOS geometry. pfdisk
and the NetBSD fdisk _report different information_ .... and the NetBSD
fdisk information is the one you need to use to feed to disklabel so
it doesn't wipe the MBR.
I really don't understand all of the magic here ... anyone have a clue
what causes this? I can provide more information if needed.
--Ken