From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 13 May 2002 19:28:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 13 May 2002 19:28:39 -0400 Received: from ip68-6-164-6.sd.sd.cox.net ([68.6.164.6]:25729 "EHLO rei.moonkingdom.net") by vger.kernel.org with ESMTP id ; Mon, 13 May 2002 19:28:36 -0400 Date: Mon, 13 May 2002 16:28:32 -0700 From: Marc Wilson To: linux-kernel@vger.kernel.org Subject: Re: downgrade ata udma mode at boot time? Message-ID: <20020513232832.GC1937@moonkingdom.net> Mail-Followup-To: linux-kernel@vger.kernel.org In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.28i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, May 13, 2002 at 03:28:56PM -0700, dean gaudet wrote: > so far in my searching i've only found the hdparm -X switch for > downgrading the ata udma mode (to give me temporary respite from 80-pin > cables which are too long). is there any way to do this on the kernel boot > line? Even Maxtor should have a utility to control what modes the drives are allowed to use. If your box isn't smart enough on its own to limit things to a safe range, then grab a copy of said utility and lock the drives down so that they CAN'T be used in UDMA5. Most of them just require booting from a floppy.... Not so tough. -- Marc Wilson msw@cox.net