From:	"Clive Minnican" <clive_minnican AT hotmail DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Reading Disk Sectors
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Message-ID:	<ULRV5.4269$0z.62544@news2-win.server.ntlworld.com>
Date:	Fri, 1 Dec 2000 18:07:10 -0000
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

Hi,

I am trying to figure out how to use DJGPP to read sectors from a floppy
disk. I have tried using the _bios_disk() function from bios.h with the code
fragment below:

char buffer[512];

 struct diskinfo_t di;
  di.drive = 0;
  di.head = 0;
  di.track = 0;
  di.sector = 0;
  di.nsectors = 1;
  di.buffer = &buffer;

_bios_disk(_DISK_RESET, &di);
  error = _bios_disk(_DISK_READ, &di);
  if (error) {
    printf("Disk Error: %x\n",error);
    exit(0);
  }

but every time it comes out with an error of 0xa00 (Bad sector flag
detected). Have I used the function correctly? If you know any other ways of
achieving the same thing please let me know. Basically I want to write a
function that reads a specified sector from the disk into a buffer.

Cheers,
Clive.

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