Subject: Re: unbootable new disk?
To: Steven M. Bellovin <firstname.lastname@example.org>
From: Christos Zoulas <email@example.com>
Date: 11/24/2004 12:52:15
On Nov 24, 9:28am, firstname.lastname@example.org ("Steven M. Bellovin") wrote:
-- Subject: Re: unbootable new disk?
| In message <I7o3H2.L1o@tac.nyc.ny.us>, Christos Zoulas writes:
| >In article <20041124042917.6C3481AE9A@berkshire.research.att.com>,
| >Steve Bellovin <email@example.com> wrote:
| >>I just tried installing -current (i386, as of today) to a new disk. The
| >>resulting system wasn't bootable.
| >>On my first attempt, I said "use the whole disk for NetBSD"; the BIOS
| >>told me "no operating system". I had accepted the defaults on most
| >>things, except that I said to use a serial console. I redid the
| >>installation, this time saying that it should create an FDISK label,
| >>but with NetBSD the only partition. I got the first-level boot prompt;
| >>I hit '1' for NetBSD. It said "Err 3". Rerunning installboot didn't
| >>fix it; when I tried running 'disklabel -B wd0' (from the installation
| >>CD's shell), I got a usage error for disklabel.
| >>My error? Or do I need to send-pr?
| >Send-pr... Even if it was your fault, the default settings should just
| >work or provide a more helpful error message.
| I'll poke at it again and send-pr tonight, when I next have access to
| the machine in question. Any suggestions on what I should do to get it
According to the mbr.S in sys/arch/i386/stand:
#define ERR_NOOS '3' /* Magic no. check failed for part. */
Which means that the fdisk partition has the wrong magic? I am just guessing.
I would escape to shell and:
1. Run fdisk -u and make sure you write in the partition in question
so that the magic gets fixed [in case that was broken].
2. Run fdisk -i to update the mbr; this will use the standard console. You
can change it later.
3. Run disklabel -r wd0 to see if the label is there. If not, you can use
disklabel -I -ir wd0 to create it interactively. If it is there, you
can use disklabel -ir wd0 to edit it.