Date: Sat, 06 Jan 2001 12:41:56 +0200
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
Sender: halo1 AT zahav DOT net DOT il
To: "Norberto Alfredo Bensa" <ceo AT nbensacomputers DOT com>
Message-Id: <1438-Sat06Jan2001124155+0200-eliz@is.elta.co.il>
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	(ceo AT nbensacomputers DOT com)
Subject: Re: Fw: Patch for statfs.c
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> From: "Norberto Alfredo Bensa" <ceo AT nbensacomputers DOT com>
> Date: Fri, 5 Jan 2001 21:48:08 -0300
> 
> I've moved the CD-ROM calls down to the "one_more_try" part of the code,
> just before 213600.
[snip]
>   if (0x07 <= dos_version /* Is FAT32 supported? */
>   && 0x0a != dos_version)  /* OS/2 doesn't support FAT32 */
>   {
>     /* 217303 - Win9x - Get Extended Free Drive Space:

Are we sure that CD-ROMs and DVDs support FAT32 calls?  If not, I
think we should not issue FAT32 calls for CDs and DVDs.  At least for
a CD, you can know that it's a CD with this snippet:

>     regs.x.ax = 0x150b;   /* is this drive supported by CD-ROM driver? */
>     regs.x.cx = drive_number;
>     __dpmi_int(0x2f, &regs);
>     if ((regs.x.flags & 1) == 0 && regs.x.bx == 0xadad && regs.x.ax != 0)
>     {

But it should be issued _before_ you try FAT32 calls on this drive.

It is IMHO a bad idea to call low-level functions on drives that
aren't supposed to support them.