From owner-freebsd-questions@FreeBSD.ORG Thu Sep 9 00:10:20 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 923C710656F2 for ; Thu, 9 Sep 2010 00:10:20 +0000 (UTC) (envelope-from freebsd-questions@pp.dyndns.biz) Received: from smtprelay-h31.telenor.se (smtprelay-h31.telenor.se [213.150.131.4]) by mx1.freebsd.org (Postfix) with ESMTP id 4AA1B8FC18 for ; Thu, 9 Sep 2010 00:10:19 +0000 (UTC) Received: from ipb1.telenor.se (ipb1.telenor.se [195.54.127.164]) by smtprelay-h31.telenor.se (Postfix) with ESMTP id 62B48E99D5 for ; Thu, 9 Sep 2010 02:10:17 +0200 (CEST) X-SENDER-IP: [85.226.59.55] X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AiEzALfCh0xV4js3PGdsb2JhbAChIgwBAQEBNS3AMYU9BA X-IronPort-AV: E=Sophos;i="4.56,336,1280700000"; d="scan'208";a="128398770" Received: from c-373be255.107-1-64736c10.cust.bredbandsbolaget.se (HELO gatekeeper.pp.dyndns.biz) ([85.226.59.55]) by ipb1.telenor.se with ESMTP; 09 Sep 2010 02:10:17 +0200 Received: from [192.168.69.67] (phobos [192.168.69.67]) by gatekeeper.pp.dyndns.biz (8.14.4/8.14.4) with ESMTP id o890AF42022740 for ; Thu, 9 Sep 2010 02:10:16 +0200 (CEST) (envelope-from freebsd-questions@pp.dyndns.biz) Message-ID: <4C8825E7.5080000@pp.dyndns.biz> Date: Thu, 09 Sep 2010 02:10:15 +0200 From: =?ISO-8859-1?Q?Morgan_Wesstr=F6m?= User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.7) Gecko/20100906 Lightning/1.0b2 Thunderbird/3.1.1 MIME-Version: 1.0 To: FreeBSD Questions Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Any way to force AHCI mode on ICH8? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 09 Sep 2010 00:10:20 -0000 I run FreeBSD 8.1 on an old Asus P5B-VM motherboard with ICH8. Its AMI BIOS lacks an option to enable AHCI mode. Intel's datasheet for the ICH8 family specifies that this feature exists on the ICH8, and the option is available in the BIOS for the identical (apart from form factor) P5B motherboard. http://www.intel.com/Assets/PDF/datasheet/313056.pdf I've contacted Asus support for an updated BIOS but I don't have much hope I will ever see one. Would it be possible to patch the FreeBSD kernel to enable AHCI mode somehow during boot? Regards Morgan