Date: Sat, 10 Nov 2001 00:42:11 -0800 From: "Crist J. Clark" <cristjc@earthlink.net> To: The Unicorn <unicorn@blackhats.org> Cc: questions@FreeBSD.ORG Subject: Re: fdisk problem with LARGE disks Message-ID: <20011110004211.D51003@blossom.cjclark.org> In-Reply-To: <20011109235041.B28591@unicorn.blackhats.org>; from unicorn@blackhats.org on Fri, Nov 09, 2001 at 11:50:41PM %2B0100 References: <20011109235041.B28591@unicorn.blackhats.org>
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On Fri, Nov 09, 2001 at 11:50:41PM +0100, The Unicorn wrote:
> Hi Guys (F/M),
>
> Hope this is the right forum for these kind of questions (although I
> personally think it could be sent to the stable list as well). Oh, and
> please reply to me directly please (perhaps with a cc to the list),
> since I am not subscribed to this mailing list.
>
> I think that fdisk can not handle disks which are larger than about
> 66GB. I currently have a system with two MAXTOR 4K080H4 (80GB) drives
> inside, but I can only use about 3/4 of the size due to this problem.
> Since I really want to start making real use of this system I am
> wondering if there is a workaround or fix/patch for this (and NO, I
> really want to make use of the whole disk and not just 60-something GB
> out of it ;-).
>
> A fast reply will really be appreciated!
I used fdisk(8) to label a 80 GB disk last week.
$ fdisk ad0
******* Working on device /dev/ad0 *******
parameters extracted from in-core disklabel are:
cylinders=17229 heads=144 sectors/track=63 (9072 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=17229 heads=144 sectors/track=63 (9072 blks/cyl)
Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 165,(FreeBSD/NetBSD/386BSD)
start 63, size 156301425 (76319 Meg), flag 80 (active)
beg: cyl 0/ head 1/ sector 1;
end: cyl 1023/ head 143/ sector 63
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>
I changed the cylinders and heads to keep sysinstall(8) from
complaining, but fdisk(8) didn't mind the original layout either,
ad0: 76319MB <WDC WD800BB-40BSA0> [155061/16/63] at ata0-master UDMA33
--
Crist J. Clark | cjclark@alum.mit.edu
| cjclark@jhu.edu
http://people.freebsd.org/~cjc/ | cjc@freebsd.org
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