From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: SATA disks disabled on boot Date: Thu, 21 Aug 2014 17:43:23 -0500 Message-ID: <20140821224323.GC7996@mtj.dyndns.org> References: <20140714163641.GF31610@htj.dyndns.org> <20140817133942.GD7679@mtj.dyndns.org> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mail-qa0-f52.google.com ([209.85.216.52]:60620 "EHLO mail-qa0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754744AbaHUWn2 (ORCPT ); Thu, 21 Aug 2014 18:43:28 -0400 Received: by mail-qa0-f52.google.com with SMTP id j15so9020611qaq.11 for ; Thu, 21 Aug 2014 15:43:27 -0700 (PDT) Content-Disposition: inline In-Reply-To: Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Nuno =?iso-8859-1?Q?Magalh=E3es?= Cc: linux-ide@vger.kernel.org On Thu, Aug 21, 2014 at 11:40:09PM +0100, Nuno Magalh=E3es wrote: > I've been shifting the disks around,trying to find a pattern. So far > only the Reds fail, i haven't been able to fail a Toshiba. At first i > thought it was because the Toshibas were both on a RAID1 - i'm still > testing this theory. I.e., i've recently dropped the RAID; one Toshib= a > now holds the OS @SATA1, all the others are empty. >=20 > I'll keep running more tests and document all combinations (SATA > ports, kernel parameters, etc) and results. I'll re-read on those > parameters and report back once i have something significant. >=20 > Could the PSU have an influence? It's a Nox Urano 500. PSU issues can lead to nasty unexpected issues, so it's theoretically possible but I can't suggest one way or the other. If you have spare components lying around, be it PSU, motherboard or a different sata controller, trying out different combinations usually is an often effective way of determining which one is the culprit. Thanks. --=20 tejun