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From: dragon@oliveb.UUCP (Give me a quarter or I'll touch you)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Absolute floppy disk sector read/write
Message-ID: <3817@oliveb.UUCP>
Date: Mon, 24-Aug-87 11:51:00 EDT
Article-I.D.: oliveb.3817
Posted: Mon Aug 24 11:51:00 1987
Date-Received: Tue, 25-Aug-87 04:26:23 EDT
References: <120@magpie.UUCP>
Organization: Dragon Technology, Inc. San Francisco, USA
Lines: 21

in article <120@magpie.UUCP>, samperi@magpie.UUCP (Dominick Samperi) says:
 
 > It seems that the DOS interrupt 0x25 (absolute disk sector read) can only
 > be used to read the first 720 sectors on a high density floppy (installed
 > in the high density drive of an AT). I've had to use the bios disk service
 > 2 in order to read all 2400 sectors. Is this a DOS bug?

I've been using DOS int 0x25 and 0x26 to do absolute reads and writes to
every sector on a high density disk.  Works fine.  I used a routine in MSC
4.0 which calls the interrupt.
 

 > 	Dominick Samperi 
 > 	Manhattan College
 > 	...!{ihnp4|seismo|rutgers|philabs}!cmcl2!manhat!samperi
 > 	...!{ihnp4|seismo}!{pur-ee|iuvax}!bsu-cs!zoo-hq!magpie!samperi 
-- 
Dean Brunette                      {ucbvax,etc.}!hplabs!oliveb!olivej!dragon
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