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Date:      Wed, 17 Oct 2001 23:25:02 -0400
From:      "Andrew C. Hornback" <achornback@worldnet.att.net>
To:        <freebsd-questions@FreeBSD.org>
Subject:   RE: Security check output questions
Message-ID:  <00c601c15784$79908ae0$6600000a@columbia>
In-Reply-To: <20011017121153.A2196@acadia.ne.mediaone.net>

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> -----Original Message-----
> From: owner-freebsd-questions@FreeBSD.ORG
> [mailto:owner-freebsd-questions@FreeBSD.ORG]On Behalf Of Louis LeBlanc
> Sent: Wednesday, October 17, 2001 12:12 PM
> To: freebsd-questions@FreeBSD.org
> Subject: Security check output questions
>
> Hey folks.  I know it's improper to ask multiple questions in a single
> message, especially unrelated, but please indulge me here.
>
> I found the following in my security check output mail message:
>
> > Oct 16 13:56:25 leblanc /kernel: pid 86613 (cheetah), uid 118:
> exited on signal 11 (core dumped)
> > ad0: WRITE command timeout tag=0 serv=0 - resetting
> > ata0: resetting devices .. ata0-master: DMA limited to UDMA33,
> non-ATA66 compliant cable

[snip]

> The next two concern me a bit more than the screensaver cores.  Quite
> a bit more.  I haven't a clue what the problem here is, but ad0 is my
> only hard drive, so write failures are a bit concerning.
>
> And what does "non-ATA66 compliant cable" mean?  The system is a Cyber
> Computer Technology system.
>
> Here are some dmesg entries that may be relevant:
>
> . . .
> atapci0: <Intel PIIX4 ATA33 controller> port 0xf000-0xf00f at
> device 7.1 on pci0
> ata0: at 0x1f0 irq 14 on atapci0
> ata1: at 0x170 irq 15 on atapci0
> . . .
> ata0-master: DMA limited to UDMA33, non-ATA66 compliant cable
> ad0: 17206MB <WDC AC418000D> [34960/16/63] at ata0-master UDMA33
> acd0: CDROM <ATAPI CD-ROM DRIVE 40X MAXIMUM> at ata0-slave using PIO4
> afd0: 120MB <LS-120 VER5 00 UHD Floppy> [963/8/32] at ata1-master
> using PIO3
> . . .
> ad0: WRITE command timeout tag=0 serv=0 - resetting
> ata0: resetting devices .. ata0-master: DMA limited to UDMA33,
> non-ATA66 compliant cable
> . . .

	ATA66 cables have 80 conductors and are required for anything over 33 MB/s
out of an IDE drive.  Odds are, you probably either have a 40 conductor
cable (standard IDE) or the cable is too long or going bad.

	This could also be because your controller is only capable of ATA33 while
the drive reports being capable of ATA66.

--- Andy


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