Date: Thu, 02 Mar 2000 11:07:28 +1100 From: Warren Welch <wwlists@intraceptives.com.au> To: freebsd-hackers@FreeBSD.ORG Subject: fdisk / disklabel issues... Message-ID: <4.2.1.20000302103756.05601b50@arthur.intraceptives.com.au> In-Reply-To: <Pine.BSF.4.21.0002292213410.62060-100000@resnet.uoregon.ed u> References: <200002282312.PAA15070@enginet.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Hi all,
I've got a problem with a couple of machines... The first time I saw the
problem, I thought it was my hardware, but now I've encountered the problem
on three different systems, all with different motherboards, and hard
disks. The only think in common, is that with all of them I'm working with
FreeBSD 3.4, and that all the disks are LARGER than 12Gb IDE's.
One of the things that I notice are that the size of the disk that gets
reported by the BIOS, and FreeBSD are totally different... As an example,
the following system reports:-
wdc0: unit 0 (wd0): <ST313021A>
wd0: 12419MB (25434228 sectors), 25232 cyls, 16 heads, 63 S/T, 512 B/S
from dmesg
yet, when I get the system BIOS to probe the disk, it reports:-
24062 cyls
16 heads
63 sects.
As you can see, FreeBSD recognizes the disk as larger than what it actually
is. I've found that if I partition the disk using the entire disk (fdisk
-e wd0), then the last partition on the disk (the one that uses the last
sectors on the disk) won't be newfs'd...
It's not at all good. sysinstall also seems to have a problem with
allowing you to set the geometry. I'd expect that if I set the geometry to
what the BIOS detects, and then say to use the entire disk, that it would
use that defined geometry. It doesn't... The moment you say to use the
entire disk, ('A', No), it resets the geometry to something it likes. If I
calculate the number of sectors manually (to what the bios detects), and
then create a slice all things work fine within that slice.
I think there is something wrong with the way that FreeBSD is detecting the
size of the disk. (Interigating the disk that is...) So far I've only had
this problem with IDE disks.
Warren
wwelch@intraceptives.com.au
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4.2.1.20000302103756.05601b50>