Identifying the max. number of drives.

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#1733

From: Robert Wallen
Date: Tue, 31 Jul 1990 08:22

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I'm writing a program that displays a window showing a list of "A:,B:,
C: ..." for the user to select a drive from.  Problem is how do you work
out what drives are installed in a system.  I can can get the number of
floppies from the equipment list function.  If I ask DOS the max. drive
number I always get 5 drives.

I have been thinking of reading the partition map to see how many drives
are on 1 hard disk, but this seems like overkill and wouldn't work for
machines that have 2 physical hard disks.

It would also be possible to read a sector from each disk to see if the
disk was there but this would take ages.

What would you do to identify and networked volumes?

Seems like someone must have done this before.

Can anyone help?

Thanks in advance, Rob Wallen

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From: rob@cs.mu.oz.au (Robert Wallen)
Newsgroups: comp.os.msdos.programmer
Subject: Identifying the max. number of drives.
Message-ID: <3102@murtoa.cs.mu.oz.au>
Date: 31 Jul 90 08:22:51 GMT
Organization: Comp Sci, Melbourne Uni, Australia
Lines: 21