From owner-freebsd-bugs  Sun Jan 12 13:19:18 2003
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Date: Sun, 12 Jan 2003 13:19:16 -0800 (PST)
From: "James J. Ramsey" <jjramsey_6x9eq42@yahoo.com>
Reply-To: jjramsey@pobox.com
Subject: Re: Semirandom bug in FreeBSD's ATA querying
To: freebsd-bugs@freebsd.org
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--- David Schultz <dschultz@uclink.Berkeley.EDU>
wrote:
> I have the same model drive as you do, and I haven't
> had any
> problems on FreeBSD 4.X or 5.0-CURRENT with any of
> three IDE
> controllers.  The line I get from dmesg is:
> 
> ad0: 19595MB <QUANTUM FIREBALLP LM20.5>
> [39813/16/63] at ata0-master UDMA66

That would shoot down the possibility that the drive,
or at least this model drive, was broken. Also would
further point to a timing issue (because of the
elusiveness of the bug).

> I have used the drive with the integrated IDE
> controllers on an
> ASUS P2B-F motherboard (440BX-based, ATA33) and an
> ASUS P3V4X
> (VIA 82C596 ATA66 controller)

For what it's worth, my motherboard is an iWill
KA266plus.

> Therefore, if you're having problems, they seem to
> be specific to
> the firmware revision of your drive, or perhaps to
> the drive
> itself. 

Or to vagarities in the motherboard's IDE controller,
or timing issues in general.

A timing bug, or a bug in the motherboard that WinXP
and Linux work around are probably the best bets.


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