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Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!ihnp4!inuxc!pur-ee!uiucdcs!uiucuxc!grayson
From: grayson@uiucuxc.UUCP
Newsgroups: net.micro.cpm
Subject: Re: permanently changing default disk fr
Message-ID: <34600008@uiucuxc.UUCP>
Date: Thu, 31-Jan-85 19:02:00 EST
Article-I.D.: uiucuxc.34600008
Posted: Thu Jan 31 19:02:00 1985
Date-Received: Sat, 2-Feb-85 10:55:40 EST
References: <393@nbs-amrf.UUCP>
Lines: 10
Nf-ID: #R:nbs-amrf:-39300:uiucuxc:34600008:000:446
Nf-From: uiucuxc!grayson    Jan 31 18:02:00 1985

>I am running CP/M-86, and want to be able to set the default disk from within
>a program in such a way that it *REMAINS* set after exiting the program.

Just modify the byte at 0004 - half of it contains the default drive number,
and half contains the default user number.  (I forget which half, but that
can easily be discovered by experiment).

	uucp:	{ihnp4,pur-ee}!uiucdcs!uiucuxc!grayson
		Dan Grayson, Math Dept, Univ of Ill, Urbana 61801