From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Lord Subject: Re: SATA speed. Should be 150 or 133? Date: Fri, 24 Jun 2005 11:35:42 -0400 Message-ID: <42BC284E.7050202@rtr.ca> References: <42BB794B.6080109@rtr.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from cpu1185.adsl.bellglobal.com ([207.236.110.166]:23566 "EHLO mail.rtr.ca") by vger.kernel.org with ESMTP id S263051AbVFXPft (ORCPT ); Fri, 24 Jun 2005 11:35:49 -0400 In-Reply-To: Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Krzysztof Oledzki Cc: Mark Lord , Jeff Garzik , linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org >> True SATA drives ignore the "transfer speed", >> as it really is meaningless and does not apply. > > So, am I the the only person confused by this message? ;) > There is "SATA max UDMA/133" not "PATA max UDMA/133". No, it really is as confusing as it sounds! The drive is SATA, but the transfer speed gunk only applies to the internal "PATA" portion of the drive, which communicates to the built-in SATA bridge chip of the same drive, which in turn presents a pure SATA interface to the host computer. > Oh, so how to check true (current) speed? Same as always: hdparm -I /dev/sd? (requires the libata-dev "passthru" patch recently reposted here by Jeff Garzik). cheers