Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!seismo!lll-lcc!mordor!styx!ames!ucbcad!ucbvax!ANDREW.CMU.EDU!mw22#
From: mw22#@ANDREW.CMU.EDU (Michael Alan Wertheim)
Newsgroups: comp.sys.apple
Subject: Re:  Need help with MLI
Message-ID: <wUZFZWy00V4I8iQ0PK@andrew.cmu.edu>
Date: Tue, 28-Apr-87 17:04:34 EDT
Article-I.D.: andrew.wUZFZWy00V4I8iQ0PK
Posted: Tue Apr 28 17:04:34 1987
Date-Received: Thu, 30-Apr-87 04:34:48 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: world
Organization: The ARPA Internet
Lines: 19


I finally got my program working by using getting the last-used unit number
out of $BF30 and calling ReadBlock to read block 2 from that volume.  The
volume name is near the beginning of block 2 on any ProDos volume.  I then
tack my filename onto the prefix, put a slash in front of the whole thing,
adjust the length, and all is well.  (Except this won't work if the file I
need is buried in a subdirectory.)

It seems that the MLI should have a "set slot/drive" command that takes a
unit-number as input and sets the prefix to the volume name at that unit.  If
there is no volume there, it should return an I/O error.

Michael Wertheim
Carnegie Mellon University
Pittsburgh, PA

Arpa: mw22@andrew.cmu.edu
Bitnet: mw22@cmuccvma
UUCP: ...!{seismo, ucbvax, harvard}!andrew.cmu.edu!mw22#