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Date:      Wed, 5 Jan 2000 11:33:59 -0800
From:      Gregory Sutter <gsutter@pobox.com>
To:        Greg Lehey <grog@lemis.com>
Cc:        Joerg Micheel <joerg@cs.waikato.ac.nz>, Mitch Collinsworth <mkc@graphics.cornell.edu>, Mike Smith <msmith@FreeBSD.ORG>, Brandon DeYoung <brandon@schoolpeople.net>, freebsd-hardware@FreeBSD.ORG
Subject:   Re: 36 GB IDE Hard Drives
Message-ID:  <20000105113359.C68135@azazel.zer0.org>
In-Reply-To: <20000105123654.F30038@freebie.lemis.com>; from grog@lemis.com on Wed, Jan 05, 2000 at 12:36:54PM %2B1030
References:  <msmith@FreeBSD.ORG> <199912250416.XAA78976@benge.graphics.cornell.edu> <19991226102238.G1316@freebie.lemis.com> <20000105143710.I2049@cs.waikato.ac.nz> <20000105123654.F30038@freebie.lemis.com>

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On Wed, Jan 05, 2000 at 12:36:54PM +1030, Greg Lehey wrote:
>> On Sun, Dec 26, 1999 at 10:22:39AM +1030, Greg Lehey wrote:
>>> On Friday, 24 December 1999 at 23:16:54 -0500, Mitch Collinsworth wrote:
>>>>> Someone else, sometime, wrote:
>>>>>>
>>>>>> Are hard drives larger than 32 GB supported by Free BSD. I've had both =
>>>>>> the 3.3 and 3.4 releases fail during the make New FS portion of the =
>>>>>> install, when installing on a Maxtor 36 GB drive.
>>>>
>>>> There's been discussion of this recently, I think on -questions.
>>>> Those involved seemed to agree there is a newfs barrier at around
>>>> 27 to 27.5 GB.  Smaller works fine, larger fails.  Based on that you
>>>> should be able to partition your 36 GB and make it usable now.  IIRC
>>>> there is a new driver in the works that's supposed to solve the
>>>> problem.
>>>
>>> Correct.  That's a thing I forgot to mention in my last message: we've
>>> tried the new ata driver with large disks and had no problems.  That
> 
> Right, the problems have only occurred on IDE drives.  That's why we
> suspect the driver.

I newfs'ed a 37.5 GB IDE drive two days ago with no problems.  I haven't
filled it past 27GB yet, but if the problem manifests at newfs time,
then I did not experience it.  Could it be related to the way the disk
is addressed (LBA)?

edge root ~ $ uname -a
FreeBSD edge.foobar.com 3.3-STABLE FreeBSD 3.3-STABLE #7: Sat Nov 27 16:04:34 PST 1999     root@:/usr/src/sys/compile/EDGE  i386

edge root ~ $ dmesg | grep wd3
wdc1: unit 1 (wd3): <IBM-DPTA-353750>, LBA, DMA, 32-bit, multi-block-16
wd3: 35772MB (73261440 sectors), 4560 cyls, 255 heads, 63 S/T, 512 B/S

edge root ~ $ df | grep wd3
/dev/wd3s1e  35503742 15241732 17421711    47%    /mp3

Greg
-- 
Gregory S. Sutter                     The measure of a man is the way
mailto:gsutter@pobox.com              he bears up under misfortune.
http://www.pobox.com/~gsutter/                    --Plutarch
PGP DSS public key 0x40AE3052


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