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From: sonny@charybdis.harris-atd.com (Bob Davis)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Can you RLL format the Seagate ST251 drive?
Message-ID: <4285@trantor.harris-atd.com>
Date: 10 Sep 90 01:22:26 GMT
Sender: news@trantor.harris-atd.com
Reply-To: sonny@trantor.harris-atd.com (Bob Davis)
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Organization: Advanced Technology Dept., Harris ESS, Melbourne, FL
Lines: 19


	Have you ever RLL formatted an ST251 42Mb MFM drive? Can you
get it to go 63Mb that way? I have an Adaptec 2372 RLL controller. If RLL
is possible, then by the DEBUG g=c800:5 jazz, do I declare 820 cylinders
and 6 heads? What are the details of what I must do to try RLL formatting?

	Does the 50% increase in drive capacity under RLL formatting
compared to MFM *always* come because there are 26 sectors/track for RLL, 
and only 17 sectors/track for MFM? And therefore does one always use
the SAME number of cylinders and heads for RLL as for MFM?

	Thanks.

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