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From: davidsen@steinmetz.UUCP (Davidsen)
Newsgroups: net.micro.att
Subject: Re: Hard Drive Controller on UNIX pc & external disks
Message-ID: <737@steinmetz.UUCP>
Date: Tue, 13-May-86 16:41:47 EDT
Article-I.D.: steinmet.737
Posted: Tue May 13 16:41:47 1986
Date-Received: Sun, 18-May-86 12:47:48 EDT
References: <520@ethos.UUCP> <592@mtune.UUCP>
Reply-To: davidsen@kbsvax.UUCP (Davidsen)
Organization: GE CRD, Schenectady, NY
Lines: 28

In article <592@mtune.UUCP> jhc@mtune.UUCP (Jonathan Clark) writes:
>In article <520@ethos.UUCP> gary@ethos.UUCP (Gary J. Smith) writes:

>Miniscribe, Seagate and so forth. Someone posted an article saying
>they had an 80MB Miniscribe (?) working. Good Luck. Remember you can
>only put one hard disk on a unix pc (groan).
>

Well... that's not *quite* true. Given that you have 2 identical disks
(or any power of two) and are willing to cob it up a bit, you can drive
a flip-flop or decoder chip off the low order head select bit(s), and
convince the controller that you have twice as many heads on one disk.
Since all manner of strange disks may be supported, this is still legal.

Warning: I am *NOT* a hardware type. I have seen this done on an ST506
interface using two of those $99 5MB disks Priority1 was selling, and I
know it's posible. What I saw was not even on a 7300, but the person
who did it assures me that "it can be done, and no I won't help you".
-- 
	-bill davidsen

	seismo!rochester!steinmetz!--\
       /                               \
ihnp4!              unirot ------------->---> crdos1!davidsen
       \                               /
        chinet! ---------------------/        (davidsen@ge-crd.ARPA)

"Stupidity, like virtue, is its own reward"