From owner-freebsd-hackers Wed Aug 22 0:56:49 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from freebsd.dk (fw-rl0.freebsd.dk [212.242.86.114]) by hub.freebsd.org (Postfix) with ESMTP id 80E8037B407 for ; Wed, 22 Aug 2001 00:56:39 -0700 (PDT) (envelope-from sos@freebsd.dk) Received: (from sos@localhost) by freebsd.dk (8.11.3/8.11.3) id f7M7uuR85066; Wed, 22 Aug 2001 09:56:56 +0200 (CEST) (envelope-from sos) From: Søren Schmidt Message-Id: <200108220756.f7M7uuR85066@freebsd.dk> Subject: Re: Any ATAPI gurus out there? In-Reply-To: <3B82F2F2.20901@yahoo.com> "from Jim Bryant at Aug 21, 2001 06:46:58 pm" To: kc5vdj@yahoo.com Date: Wed, 22 Aug 2001 09:56:41 +0200 (CEST) Cc: freebsd-hackers@FreeBSD.ORG Reply-To: sos@freebsd.dk X-Mailer: ELM [version 2.4ME+ PL88 (25)] MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG It seems Jim Bryant wrote: (please wrap lines at max 70 chars) > My friend, whom I am trying to teach unix [4.3-stable] was having some > problems on his secondary ATAPI bus. A Creative CD-ROM was > the master, a HP burner was the slave. > > The CD-ROM was having data dropouts, and was due to old age, no doubt. > > Under Winblowz, the HP burner would only get 4x when it was able to burn. > it's a 12x/8x/32x drive. > > Under BSD, the CD-ROM would be usable, but would be prone to dropouts. > > Under BSD, the HP burner came up with sense errors on boot, prior to a > proper probe reply. It would hang for the duration of several timeouts > at the point before it got the probe. > > Under BSD, the HP burner would cause a terminal wait state upon any access > [such as a mount request, or a burncd command]. Red-button time... > > This last Friday, he bought a new CD-ROM, and a new burner, as we both > thought both drives had issues. > > He put his new drives in his box. Everything works now, under Winblowz > AND BSD. > > I put the the HP burner in MY box, and voila! Nothing is wrong with it... > > Questions: > > 1). Can a flaky ATAPI "Master" cause a good ATAPI "Slave" to APPEAR > [however incorrectly] that the "Slave" has a problem? Yes. > 2). If #1 is true, then, why? Crappy firmware, non-std or broken HW, those two reasons hold for both ATAPI and SCSI.... -Søren To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message