From owner-freebsd-questions@FreeBSD.ORG Wed Feb 16 12:45:00 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id EA8E516A4CE for ; Wed, 16 Feb 2005 12:45:00 +0000 (GMT) Received: from asmtp02.eresmas.com (asmtp02.eresmas.com [62.81.235.142]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6E06743D45 for ; Wed, 16 Feb 2005 12:45:00 +0000 (GMT) (envelope-from ea1abz@wanadoo.es) Received: from [192.168.108.54] (helo=mx01.eresmas.com) by asmtp02.eresmas.com with esmtp (Exim 4.30) id 1D1OY6-0000oQ-V5 for freebsd-questions@FreeBSD.org; Wed, 16 Feb 2005 13:44:58 +0100 Received: from [80.103.47.77] (helo=[80.103.47.77]) by mx01.eresmas.com with asmtp (Exim 4.41) id 1D1OY5-0005nw-Nh for freebsd-questions@FreeBSD.org; Wed, 16 Feb 2005 13:44:58 +0100 Message-ID: <42133C6C.307@wanadoo.es> Date: Wed, 16 Feb 2005 13:28:28 +0100 From: Ramiro Aceves User-Agent: Mozilla Thunderbird 0.9 (X11/20041124) X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-questions-en X-Enigmail-Version: 0.89.0.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: 0.0 (/) X-Spam-Score: 0.0 (/) Subject: UDMA ICRC error X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Feb 2005 12:45:01 -0000 Hello FreeBSD friends. I have read that others had this problem before. I just write this report for you to know. I received yesterday two old computers retired from a school and finally I was able to build a "decent" machine mixing the best parts of each one. The machine is an AMD K6 400 MHz with 64 MB RAM, AGP i740 video. Hard disk is Seagate ST34321A/3.05 master on ide0 bus. On ide1 bus there is a CD-R as master, and a CD-RW as slave. Disk controller is VIA 82C586B UDMA33. When I installed FreeBSD 5.3 R, I get some errors like this, but I could end the install: ad0: WARNING -READ_DMA UDMA ICRC error (retrying request) LBA=5313599 ad0: FAILURE -READ_DMA status=51 error=84 >ICRC,ABORTED> spec_getpages:(ad0s1a) I/O read failure: (error=5) ................ I have solved the problem disabling DMA: hw.ata.ata_dma="0" (I previously tried disabling ACPI with no success, and playing with BIOS LBA, LARGE, NORMAL settings at the BIOS with no success). Now ad0: works in PIO4 mode and everything is fine, previously , it was UDMA33. Now there are no errors. Should I investigate it further, or this is the only possible solution? Should I expect a great performance decreasing in I/O disk access? Thanks in advance. Ramiro.