Path: utzoo!attcan!uunet!seismo!sundc!pitstop!sun!decwrl!labrea!rutgers!tut.cis.ohio-state.edu!bloom-beacon!bu-cs!mirror!ima!think!ephraim
From: ephraim@think.COM (Ephraim Vishniac)
Newsgroups: comp.sys.mac.hypercard
Subject: Re: Getting information from the desktop
Message-ID: <30733@think.UUCP>
Date: 9 Nov 88 12:21:32 GMT
References: <59820SAS102@PSUVM>
Sender: news@think.UUCP
Reply-To: ephraim@vidar.think.com.UUCP (Ephraim Vishniac)
Organization: Thinking Machines Corporation, Cambridge MA, USA
Lines: 23

In article <59820SAS102@PSUVM> SAS102@PSUVM.BITNET (Steven A. Schrader) writes:

>Does anyone out there know how to get information such as what disk
>is in which drive, etc.

>                    Steven A. Schrader(SAS102@PSUVM, SAS102@PSUVM.BITNET
>                                       SAS@PSUARCH, SAS@PSUARCH.BITNET)


This information (and lots of other good stuff) is recorded in the
Volume Control Block (VCB).  See the volume information calls among
the file manager routines in IM II (old versions) or IM IV (HFS
versions).  If you're writing in assembly language, you may find it
easier just to walk the VCB list directly.  Apple will frown at you,
of course, since looking directly at low-memory stuff is discouraged.



Ephraim Vishniac					  ephraim@think.com
Thinking Machines Corporation / 245 First Street / Cambridge, MA 02142-1214

     On two occasions I have been asked, "Pray, Mr. Babbage, if you put
     into the machine wrong figures, will the right answers come out?"