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Date:      Thu, 20 Feb 2003 08:36:14 +0800
From:      Shaun Dwyer <sdwyer@arach.net.au>
Cc:        freebsd-stable@FreeBSD.ORG
Subject:   Re: PIO4 mode on ST380023A hard disk
Message-ID:  <3E5422FE.4070603@arach.net.au>
In-Reply-To: <20030220001320.GA86010@scaleo.gjcl.nl>
References:  <20030220001320.GA86010@scaleo.gjcl.nl>

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I can't tell you why it starts out in PIO mode... we have a server at work running Debian Lunix that does the same thing.
running hdparm(plus some flags) to put it into UDMA mode fixes it. Its a P3 on a Abit motherboard.

You may need to just use 'atacontrol' to set it into UDMA mode after booting (or during a boot script).

--Shaun

Lokhorst wrote:

> Hello,
>
> Does anyone know the solution to the following puzzle:
>
> Why do I get
>
> ad0: 76319MB  [155061/16/63] at ata0-master PIO4
>
> while Windows XP runs the same hard disk in UDMA5 mode (i.e., much faster)?
>
> I use FreeBSD 4.7-STABLE from about a week ago.
>
> Gert-Jan Lokhorst
>
>
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