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From: abe@pucc-j (Vic Abell)
Newsgroups: net.micro.mac
Subject: How do you find the startup drive's vRefNum?
Message-ID: <693@pucc-j>
Date: Fri, 3-Jan-86 18:22:39 EST
Article-I.D.: pucc-j.693
Posted: Fri Jan  3 18:22:39 1986
Date-Received: Sat, 4-Jan-86 05:58:22 EST
Organization: Purdue University Computing Center
Lines: 9

Can anyone suggest a way to determine the startup drive's identity?
The File Manager Programmer's Guide in IM warns you not to unmount
the startup drive, but it doesn't tell you how to identify it.  I
know about GetVol, but it reports the default drive, and that may
not always be the startup.  Currently I am using GetVInfo for both
drives and avoiding unmount on either, but it seems to me that there
ought to be a better way.

Vic Abell, abe@asc.purdue.edu or ...!pur-ee!pucc-j!abe