From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: Problem with ahci and a external sata disk Date: Sun, 09 Mar 2008 14:17:12 +0900 Message-ID: <47D372D8.2010708@gmail.com> References: <200802191646.39277.jareguero@telefonica.net> <200803071515.43686.jareguero@telefonica.net> <200803072333.12877.jareguero@telefonica.net> <200803080220.20565.jareguero@telefonica.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Return-path: Received: from rv-out-0910.google.com ([209.85.198.184]:1400 "EHLO rv-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751020AbYCIFRS (ORCPT ); Sun, 9 Mar 2008 00:17:18 -0500 Received: by rv-out-0910.google.com with SMTP id k20so722814rvb.1 for ; Sat, 08 Mar 2008 21:17:18 -0800 (PST) In-Reply-To: <200803080220.20565.jareguero@telefonica.net> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Jose Alberto Reguero Cc: linux-ide@vger.kernel.org Jose Alberto Reguero wrote: > [root@jar Pls]# hdparm -I /dev/sdd > > /dev/sdd: > > ATA device, with non-removable media > Model Number: ST3750640AS > Serial Number: 5QD3Q2AZ > Firmware Revision: 3.AFM > > How can be so diferent that the one make with esata? That's because your enclosure is emulating IDENTIFY command when attached via SATA. It's emulating USB mass storage device when connected via USB but your enclosure is good enough to implement ATA command passthrough and as hdparm issues IDENTIFY using command passthrough, it gets to the actual drive and returns the result directly. -- tejun