From: Silver <SilverBanana AT gmx DOT de>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Bios
Date: Sun, 14 Oct 2001 14:25:30 +0200
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To: djgpp AT delorie DOT com
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Silver wrote:
> 
> Hi!
> 
> I was jsut trying to dump my partition table (an 80 GB hd). So I wrote
> this program:
> 
> #include <conio.h>
> #include <bios.h>
> 
> int main()
> {
>         textmode(C4350);
>         clrscr();
>         unsigned char c[512];
>   if (biosdisk(2, 0x81, 0, 0, 0, 1, c))
>     cprintf("Error: disk");
>         for(int x=0; x<512; x+=16)
>         {
>         for(int i=0; i<16; i++)
>         {
>                 cprintf("%2x ",c[x+i]);
>         }
>         for(int i=0; i<16; i++)
>         {
>                 unsigned char a=c[x+i];
>                 if (a<' ') {a=' ';}
>                 cprintf("%c",a);
>         }
>                 cprintf("\r\n");
>         }
> }
> 
> However: It did not dump my partition table. Instead it prints some
> unidentifiable data. biosdisk writes something into my memory and it is
> consistent over all sessions. I am sure anyway that it is not my
> partition table. The program has to work under Windows 98 SE.
> 
> Any ideas why it doesn't work as wanted and how I could fix it?
> 
> Thanks in advance
> 
> Silver

Although I still don't know why this happens, I found a rather good way
to circumvent the problem by simply not using int 0x13, ah=02. Now I use
LBA Extension int 0x13, ah=0x42. Anyway: I think Delorie should consider
to support this API because it seems to be far better than the old one.

Silver