Write to a disk in the A drive

Posted on February 14th, 2009 in C by admin

This requires an older operating system and compiler, Turbo C and Windows 98 for example

#include <stdio.h>
#include <dos.h>
#include <stdlib.h>
#include <bios.h>

int main(void)

{
unsigned char buffer[512];
clrscr();
printf(”Insert a blank disk in the A: drive , then press any key.\n”);
/*wait for keypress*
getch();
if(abswrite(0,1,1,&buffer) != 0)
printf(”Cannot write to the A drive.\n”);
else
printf(”Drive A , Sector 1 written to\n”);
return 0;

}

absread

Posted on February 12th, 2009 in C by admin

This reads a specified disk sector on a floppy disk

#include <stdio.h>
#include <dos.h>
#include <stdlib.h>
#include <bios.h>

int main(void)

{

unsigned char buffer[512];

clrscr();
printf(”Insert disk in the A: drive , then press any key.\n”);

/*wait for keypress*/
getch();
if(absread(0,1,1,&buffer) != 0)
printf(”Cannot read the A drive.\n”);

else
printf(”Drive A , Sector 1 read\n”);

return 0;

}

This was written using Turbo C and tested on Windows 98