Date: Sun, 14 Jul 1996 09:43:05 -0400 From: Gary Chrysler <tcg@ime.net> To: James B Amy <jimamy@io.org> Cc: "'FreeBSD Questions'" <questions@FreeBSD.org> Subject: Re: FreeBSD CD Installation Message-ID: <31E8F969.6C02@ime.net> References: <01BB7116.F3060DA0@486-hot-rod.net4.io.org>
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James B Amy wrote: > > Gary, > >> My questions now are: >> wd0: HD master > HD slave >> wd1: CD master >> Does this work anyone? (not revelant to original question) > > Glad you asked. It is relevant because this is the setup I > currently have and would like to be able to use! > Ok, From your original message I don't remember mention of a second HD. But yes I would think this would be the optimal setup! And you have tried this and it dosn't work?? Bummer! >> Or MUST it be >> wd0: HD master >> CD slave >> wd1: HD master >> (Not revelant to original question) > > This is a possible reconfiguration for me however, I was under > the impression that having an ATAPI device connected to the > same IDE channel as a HD affected the performance of the HD. > Apparently, the HD is forced to wait for CD-ROM commands to > complete and vice versa, thus slowing things down. > It is always recommended that a CD-ROM drive be connected to a > secondary IDE channel, while the primary channel be used by the HDs. > Yes, I have heard this as well, If it's fact or fiction I don't know. I'm not a unix guru, In dos I find no difference! I have run comparision<sp?> tests both ways on the same machine. (486DX2-66 16megs, Maxtor 7540, NEC MultiSpin 4V IDE) Testing with a suite of different analyzers. All produced the same results in either configuration. So if in fact a CD on the same interface slows it down I have yet to see PHYSICAL PROOF! Not to say it's not true though, Maybe it is! >> I am not sure but I belive I read here in -questions that as long >> as you do actually have a slave on wd0 that a ATAPI cd will work >> on wd1 as master. Am I wrong?? (Not revelant to original question) >> > Again, very relevant to my situation and I hope it does work! But > that is not what the installation manual implies. Apparently the > CD-ROM must be configured as slave, therefore I either have to > put the CD-ROM on the primary channel along with one of my HDs > or, I have to connect another IDE device to my secondary channel > as master. Either way, performance is affected. > > Is FreeBSD working on this CD-ROM master/slave problem? > I would imagine so and that we will find out for sure within the next few days/weeks when 2.1.5r is out. But my guess is that it is indeed solved with the way the FreeBSD team tackles such things. :) They would be the ones to ask this though. If in fact the CD _MUST_ be configured as slave then you are right you have two choices! wd0: HD master CD slave wd1: HD master or Buy (or pull one from the junk pile) another IDE HD and: wd0: HD master HD slave wd1: HD master CD slave Yes, This would be an irritating situation, Fortunally I run SCSI But I do sell IDE's to my customers! And I usually do use the secondary IDE interface provided with the CD for Ease/Speed of installation. :) BTW, I blew -support out of the Cc field, They don't need the flood! -Enjoy Gary ~~~~~~~~~~~~~~~~ Improve America's Knowledge... Share yours The Borg... Where minds meet (207) 929-3848
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