From owner-freebsd-questions Fri Sep 7 4:16:38 2001 Delivered-To: freebsd-questions@freebsd.org Received: from router.darlow.co.uk (pc2-bigg2-0-cust101.lut.cable.ntl.com [213.107.35.101]) by hub.freebsd.org (Postfix) with ESMTP id 4D58437B408 for ; Fri, 7 Sep 2001 04:16:35 -0700 (PDT) Received: from ideal.darlow.co.uk (neil@ideal.darlow.co.uk [192.168.0.3]) by router.darlow.co.uk (8.11.3/8.11.3) with SMTP id f87BFkM15598 for ; Fri, 7 Sep 2001 12:15:46 +0100 (BST) (envelope-from neil@darlow.co.uk) From: Neil Darlow Date: Fri, 07 Sep 2001 11:16:33 GMT Message-ID: <20010907.11163300@ideal.darlow.co.uk> Subject: UDMA question To: freebsd-questions@freebsd.org X-Mailer: Mozilla/3.0 (compatible; StarOffice/5.2;Linux) X-Priority: 3 (Normal) MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable 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 Hi All, I have upgraded my FreeBSD 4.3-RELENG_4_3 system to the following: /dev/ad0 - UDMA/66 drive /dev/ad2 - UDMA/66 drive /dev/acd0 - UDMA/33 cdrom The cdrom drive is slave to /dev/ad0 and bios says it's in PIO4. The system runs fine but /dev/ad0 drops to UDMA/33 operation which I assume is caused by the presence of the cdrom. Is there any way I can restore UDMA/66 operation to /dev/ad0 with the setting of driver flags etc? Please don't say remove the cdrom and, yes, UDMA/66 cables are used for both drive chains. Regards, Neil Darlow. -- 1024D/531F9048 1999-09-11 Neil Darlow GPG fingerprint =3D 359D B8FF 6273 6C32 BEAA 43F9 E579 E24A 531F 9048 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message