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Date:      Wed, 5 Jan 2000 12:36:54 +1030
From:      Greg Lehey <grog@lemis.com>
To:        Joerg Micheel <joerg@cs.waikato.ac.nz>
Cc:        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:  <20000105123654.F30038@freebie.lemis.com>
In-Reply-To: <20000105143710.I2049@cs.waikato.ac.nz>
References:  <msmith@FreeBSD.ORG> <199912250416.XAA78976@benge.graphics.cornell.edu> <19991226102238.G1316@freebie.lemis.com> <20000105143710.I2049@cs.waikato.ac.nz>

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On Wednesday,  5 January 2000 at 14:37:10 +1300, Joerg Micheel 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:
>>>
>>>>> 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 shouldn't be any issues with large drives, no.  Since you don't
>>>> provide any details to qualify "fail", it's hard to guess where your
>>>> problems might lie.
>>>
>>> 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
>> doesn't mean there are none, though: until we know what causes the
>> problems, we can't be sure that they're gone.  ata is standard in 4.0.
>
> FIW, I'm running a Seagate 50GB SCSI drive since about a month in a
> 3.3-RELEASE system without problems.
>
> Dec 10 13:50:17 negara /kernel: da0 at ahc0 bus 0 target 1 lun 0
> Dec 10 13:50:17 negara /kernel: da0: <SEAGATE ST150176LW 0002> Fixed Direct Access SCSI-2 device
> Dec 10 13:50:17 negara /kernel: da0: 40.000MB/s transfers (20.000MHz, offset 8, 16bit), Tagged Queueing Enabled
> Dec 10 13:50:17 negara /kernel: da0: 47702MB (97693755 512 byte sectors: 255H 63S/T 6081C)

Right, the problems have only occurred on IDE drives.  That's why we
suspect the driver.

Greg
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