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Date:      Fri, 18 May 2007 16:25:36 +0100
From:      Tom Evans <tevans.uk@googlemail.com>
To:        "Brian A. Seklecki" <bseklecki@collaborativefusion.com>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: Native SATA vs. PATA-emulation - difference?
Message-ID:  <1179501936.1234.3.camel@zoot.mintel.co.uk>
In-Reply-To: <1179500233.41472.220.camel@soundwave.pgh.priv.collaborativefusion.com>
References:  <20070518090435.GB17241@hugo10.ka.punkt.de> <1179500233.41472.220.camel@soundwave.pgh.priv.collaborativefusion.com>

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On Fri, 2007-05-18 at 10:57 -0400, Brian A. Seklecki wrote:
> On Fri, 2007-05-18 at 11:04 +0200, Patrick M. Hausen wrote:
> > to UDMA33. I figure, they can safely be ignored?
>=20
>=20
> Only if there isn't some massive performance degradation. =20
> ports/benchmarks/bonie++ can tell you that. =20
>=20
> As for the boot loader and your gmirror volumes; it's hard to say.  It's
> possible that there is some "absolute" or "non-relative" data in there
> related to the device and the bus.
>=20
> Also:  Maybe the geometry of the devices changes between modes?
>=20
> Send us the comparable dmesg(8) in both modes?
>=20
> ~BAS
>=20

On my Intel ICH7 based laptop, switching from SATA/PATA emulation to
SATA native mode changes the device of my HD from ad0 to ad4.=20

YMMV

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