From owner-freebsd-questions Thu Oct 25 5:24:57 2001 Delivered-To: freebsd-questions@freebsd.org Received: from logicalhost.com (logicalhost.com [63.169.206.2]) by hub.freebsd.org (Postfix) with ESMTP id 6C85537B406 for ; Thu, 25 Oct 2001 05:24:55 -0700 (PDT) Received: from colt.ncptiddische.net (ppp-209.wobline.de [212.68.69.220]) by logicalhost.com (8.11.6/8.11.6) with ESMTP id f9PCR2R99205; Thu, 25 Oct 2001 08:27:02 -0400 (EDT) Received: from jodie.ncptiddische.net (jodie.ncptiddische.net [192.168.0.2]) by colt.ncptiddische.net (8.11.6/8.11.6) with ESMTP id f9PCRLx49302; Thu, 25 Oct 2001 14:27:26 +0200 (CEST) (envelope-from nils@tisys.org) Received: from jodie.ncptiddische.net (jodie.ncptiddische.net [192.168.0.2]) by jodie.ncptiddische.net (8.11.6/8.11.6) with ESMTP id f9PCOn300565; Thu, 25 Oct 2001 14:24:50 +0200 (CEST) (envelope-from nils@tisys.org) Date: Thu, 25 Oct 2001 14:24:49 +0200 (CEST) From: Nils Holland X-X-Sender: nils@jodie.ncptiddische.net To: Erik Trulsson Cc: freebsd-questions@freebsd.org Subject: Re: UDMA66 - One cable, two modes? In-Reply-To: <20011025121913.A5846@student.uu.se> Message-ID: <20011025142005.O530-100000@jodie.ncptiddische.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Thu, 25 Oct 2001, Erik Trulsson wrote: > If you want to use UDMA66 you are not allowed more than one drive per > cable. It is the fact that you have two drives connected to the same cable > which makes the cable not UDMA-66 compliant. This is not FreeBSD specific > but rather an effect of how ATA works. If you want to run both drives at > UDMA-66 speeds you will have to get an extra controller. Oops, thanks! I guess I should have found about about it reading some UDMA66 specs or even that little booklet included with my HDs. Anyway, it *should* be sufficent to connect one of the two drivers to ata1. Then, only one UDMA66 drive is on both ata0 (primary) and ata1 (secondary). The only problem may be that I have heard several times that a secondary IDE port on a mainboard does not neccessarily support all the features as the primary port. I guess I'll simply have to try it out then... Greetings Nils Nils Holland Ti Systems - FreeBSD in Tiddische, Germany http://www.tisys.org * nils@tisys.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message