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Article View: comp.sys.ibm.pc.misc
Article #395

Re: Offset sector disk formatter wanted

#395
From: boyd johnson
Date: Tue, 28 Jul 1992 22:36
27 lines
1704 bytes
In article <Brp4Ft.5F2@news.cso.uiuc.edu> berger@atropa (Mike Berger) writes:
>rhunt@med.unc.edu (Rick Hunt) writes:
[stuff deleted]
>>It was used to format floppy disks with a offset sector format
>>that sped up disk access by about 75%.

>The shareware "diskrw" program appears to do this.  You run a blank
>disk of any format that interests you first so it can establish the
>best interleave for your machine.
>
>Of course, the format you use might be faster on your own machine,
>but much slower on others, so you might not have much of an
>advantage if you primarily make floppy disks for use elsewhere.

The program FDFORMAT ver 1.8 has options for sector sliding, but doesn't
have the optimizing routine mentioned for diskrw.
FDFORMAT can also format diskettes to non-standard formats.  I use it to
format all my old 360K diskettes to 820K for use on a 1.2MB drive.
You need to included FDREAD to load as about a 160 byte TSR to be able
to read non-standard formatted diskettes.
You can find it at Simtel as PD:<MSDOS.DSKUTL>FDFORM18.ZIP

Personally, I've tried different sector sliding values and have found
none that works better than the standard no-offset.

-- 
======== Boyd Johnson    nosc!spectra.com!johnson  San Diego, Ca. ========
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Message-ID: <1992Jul28.223601.8226@spectra.com>
Path: arc1-ca.pugleaf.net!sparky!uunet!cis.ohio-state.edu!ucbvax!dog.ee.lbl.gov!nosc!spectra!johnson
References: <1992Jul20.023156.7211@samba.oit.unc.edu> <Brp4Ft.5F2@news.cso.uiuc.edu>

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Path: arc1-ca.pugleaf.net!sparky!uunet!cis.ohio-state.edu!ucbvax!dog.ee.lbl.gov!nosc!spectra!johnson
From: johnson@spectra.com (boyd johnson)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: Offset sector disk formatter wanted
Message-ID: <1992Jul28.223601.8226@spectra.com>
Date: 28 Jul 92 22:36:01 GMT
References: <1992Jul20.023156.7211@samba.oit.unc.edu> <Brp4Ft.5F2@news.cso.uiuc.edu>
Organization: Spectragraphics Corporation
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