Date: Mon, 1 Apr 1996 10:05:57 -0700 (MST) From: Terry Lambert <terry@lambert.org> To: hlew@genome.Stanford.EDU (Howard Lew) Cc: terry@lambert.org, macgyver@infinet.com, hackers@FreeBSD.org Subject: Re: Dell EIDE drive data corruption with FreeBSD? Message-ID: <199604011705.KAA13637@phaeton.artisoft.com> In-Reply-To: <Pine.SUN.3.91.960331213507.6304B-100000@vegemite.Stanford.EDU> from "Howard Lew" at Mar 31, 96 09:36:29 pm
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> > > > > A while ago, I rememeber someone posted something about it. > > > > > I think the machine in question was a Dell P75 with EIDE drive, > > > > > > > > > > Was a solution found? > > > > > > > > Is this the flawed IDE chipset that loses data if you interleave I/O? > > > > > > > > If so, the answer is to change your CMOS settings. > > > > > > Hmmm.... what chipset did they use? > > > > PC-TECH RZ1000 chip. About 1/3 of all onboard EIDE disk controllers > > are broken. I don't know how many controller cards. > > > Is there a diagnostic program out there to discover the flaw or is it > more or less a random problem that crops up once in a while? Read the board doc and don't buy equipment with these chips. 8-(. You can also avoid the problem by not buying IDE. It's on the order of broken cache writeback (or original Saturn and Mercury chipsets, etc.). It would take a specialized hardware card coupled with software to properly diagnose. If you have this chip, hope that you have an extended CMOS setup, or you will have to replace the card/disable the motherboard IDE to fix it. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.
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