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Path: utzoo!watmath!clyde!cuae2!ihnp4!inuxc!iuvax!bobmon
From: bobmon@iuvax.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: Re: RLL controller
Message-ID: <2622@iuvax.UUCP>
Date: Sat, 31-Jan-87 15:07:34 EST
Article-I.D.: iuvax.2622
Posted: Sat Jan 31 15:07:34 1987
Date-Received: Sun, 1-Feb-87 07:44:53 EST
References: <1083@ethos.UUCP> <1373@bnrmtv.UUCP>
Reply-To: bobmon@iuvax.UUCP (RAMontante)
Organization: Indiana University, Bloomington
Lines: 15

In article <1373@bnrmtv.UUCP> perkins@bnrmtv.UUCP (Henry Perkins) writes:
>
>I'm using an Adaptec RLL controller with a generic (i.e., cheap) hard
>disk in my Compaq DeskPro.  It works fine, and I'm now getting 30 Mb
>instead of 20 Mb ... BUT I can't boot from hard disk anymore, since
>Compaq's boot ROM (and Compaq DOS, too, but that's another story)
>assumes 17 sectors/track.  RLL encoding gives 25 sectors/track instead
>of 17.

Interesting...my Zenith documentation is quite sure of 17 sectors/track, but
(after some initial difficulties with installation) I can boot off my Seagate
drive/Adaptec controller.  However, it ALWAYS checks the A drive first, even if
I use the Monitor ROM and tell it to go directly to the hard disk.  As long as
I don't leave a disk in the A drive I'm okay, although it is just a trifle
irritating to have it spin the A drive (it doesn't BELIEVE me?).