From: "Clive Minnican" <clive_minnican AT hotmail DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Reading Disk Sectors
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Date: Fri, 1 Dec 2000 18:07:10 -0000
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To: djgpp AT delorie DOT com
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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.