Date: Wed, 22 Aug 2001 09:56:41 +0200 (CEST) From: Søren Schmidt <sos@freebsd.dk> To: kc5vdj@yahoo.com Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Any ATAPI gurus out there? Message-ID: <200108220756.f7M7uuR85066@freebsd.dk> In-Reply-To: <3B82F2F2.20901@yahoo.com> "from Jim Bryant at Aug 21, 2001 06:46:58 pm"
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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
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