From owner-freebsd-questions Wed Nov 1 12: 8:53 2000 Delivered-To: freebsd-questions@freebsd.org Received: from mail.thpoon.com (cr103675-a.bloor1.on.wave.home.com [24.114.152.71]) by hub.freebsd.org (Postfix) with SMTP id 9E25B37B4D7 for ; Wed, 1 Nov 2000 12:08:46 -0800 (PST) Received: (qmail 1135 invoked from network); 1 Nov 2000 20:08:46 -0000 Received: from unknown (HELO tea.thpoon.com) (mail@192.168.1.2) by cr103675-a.bloor1.on.wave.home.com with SMTP; 1 Nov 2000 20:08:46 -0000 Received: from antipode by tea.thpoon.com with local (Exim 3.12 #1 (Debian)) id 13r4Bh-0001ml-00 for ; Wed, 01 Nov 2000 15:08:45 -0500 To: freebsd-questions@FreeBSD.ORG Subject: Re: ad0: DMA problem fallback to PIO mode; HARD READ ERROR blk#25418687 References: <3A006927.D10FC9E0@telecom.ksu.edu> From: Arcady Genkin X-Face: 0=A/O5-+sE[Tf%X>rYr?Y5LD4,:^'jaJ!4jC&UR*ZrrK2>^`g22Qeb]!:d;}2YJ|Hq"LHdF OX`jWX|AT-WVFQ(TPhFVak)0nt$aEdlOq=1~D,:\z5QlVOrZ2(H,mKg=Xr|'VlHA="r Organization: thpoon.com Mail-Copies-To: never Date: 01 Nov 2000 15:08:45 -0500 In-Reply-To: <3A006927.D10FC9E0@telecom.ksu.edu> Message-ID: <87wven1mlu.fsf@tea.thpoon.com> Lines: 55 User-Agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.1 (Channel Islands) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG nathan writes: > i assume you "upgraded" fbsd recently? Not really. The box has been running 4.0 ever since it came out. 3.X before that. > make sure DMA is NOT enabled in the kernel ... that MIGHT be whats > happening, your kernel is tryin to use DMA through a non-dma channel > (your p166 onboard ctrl) How can I find out if my mobo's IDE controller supports DMA? It appears that the second disk has been running in DMA mode for months, and no problem... > i don't know what brand of mobo you have, but, being an ex-hardware guy, i've > RARELY seen onboard IDE controllers go bad.. even on OLD hardware... It's a Gygabit with an HX chipset. Here are relevant boot-up messages: pcib0: on motherboard pci0: on pcib0 isab0: at device 7.0 on pci0 isa0: on isab0 atapci0: port 0xf000-0xf00f at device 7.1 on pci0 ata1: at 0x170 irq 15 on atapci0 ata1-master: DMA limited to UDMA33, non-ATA66 compliant cable ad2: 13042MB [26500/16/63] at ata1-master WDMA2 ad3: 18366MB [37317/16/63] at ata1-slave WDMA2 Mounting root from ufs:/dev/ad2s1a It's the IBM drive that's giving me grief. That cable message, is it of any importance? I don't think the controller can do ATA-66 anyways, so I figured that DMA33 would do. Any further thoughts? > > > I just replaced a hard drive in one computer, because the previous one > > > died last night. (It was a 3.5 years old WD, so I thought that it had > > > to happen). Well, I was getting these errors with the previous > > > harddrive. Now I completely reinstalled the system, and I'm getting > > > same error messages with the new one. > > > > > > ad0: HARD READ ERROR blk# 25418671 > > > ad0: DMA problem fallback to PIO mode > > > ad0: HARD READ ERROR blk# 25418687 status=59 error=40 > > > ad0: DMA problem fallback to PIO mode > > > ad0: HARD READ ERROR blk# 25418687 status=59 error=40 > > > ad0: HARD READ ERROR blk# 25418687 status=59 error=40 Many thanks, -- Arcady Genkin Don't read everything you believe. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message