From: sandmann AT clio DOT rice DOT edu (Charles Sandmann)
Message-Id: <10109302021.AA13515@clio.rice.edu>
Subject: Re: mntent problem summary on Win2K/XP
To: eliz AT is DOT elta DOT co DOT il
Date: Sun, 30 Sep 2001 15:21:17 -0500 (CDT)
Cc: djgpp-workers AT delorie DOT com
In-Reply-To: <9003-Sun30Sep2001093244+0300-eliz@is.elta.co.il> from "Eli Zaretskii" at Sep 30, 2001 09:32:44 AM
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> > My CDROM drive is mounted and ready but it does not show up at all
> > (not debugged yet).
> 
> The CD-specific calls in cdrom_drive_ready probably don't work as
> expected...

Actually this is a problem related to the volume label call failing.
There is code:

     /* CD-ROM without a label is taken as an empty CD drive or an
        audio disk, and not reported.  This is because MSCDEX doesn't
        fail `_truename' for these cases and some DOS clones, such as
        NT, don't even emulate the drive empty bit reliably.
        I have never seen a CD-ROM without a label.  Anybody?  */
     else if (mnt_type == NAME_cdrom)
       got_fsname = 0;

Which was causing the problem.  If I add  && _os_trueversion != 0x532)
to this line, my CD displays when it's in, but not when it's out.
But the comment says NT doesn't emulate drive empty bit reliably -
so this would be not quite right on NT 4.0 (I can confirm this).

So is it better to display a drive which isn't ready on NT4, or not 
display a drive which is ready on Windows 2000?

Even better yet, is there a reliable way on Windows 2000 to get a 
volume label...