Mine

#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <linux/hdreg.h>

typedef struct hd_geometry geometry;

int main(int argc, char** argv)
{
	geometry* geom = malloc(sizeof(geometry));
	int dev = open(argv[1], O_RDWR|O_SYNC);
	ioctl(dev, HDIO_GETGEO, geom);
	
	printf("Cylinders: %d\nHeads: %d\nSectors: %d\n",
		geom->cylinders, geom->heads, geom->sectors);
		
	int screen = 80*24;
	long long disk = geom->cylinders * geom->sectors * geom->heads;
	int sectors_per_block = disk/screen;
		
	int* blank = malloc(128 * sizeof(int));
	int it;
	for (it = 0; it < 128; it++)
	{
		blank[it] = 0;
	}
	
	int f = 255/geom->heads;
	int h = 255;
	int c = geom->cylinders/f;

	printf("\033[2J");	
	
	int i, j, k;
	for (i = 0; i < geom->sectors; i++)
	{
		for (j = 0; j < c; j++)
		{
			for (k = 0; k < h; k++)
			{
				unsigned long long loc = ((j * h + k) * geom->sectors) + i;
				lseek(dev, loc, SEEK_SET);
				write(dev, blank, 512);
				
				unsigned int place = loc/sectors_per_block;

					printf("\033[%d;%dH*", place/80, place%80);
					printf("\033[24;18HS %d", i);
					printf("\033[24;38HC %d", j);
					printf("\033[24;58HH %d", k);
				fflush(stdout);
			}
		}
		printf("\033[2J");
	}
	return 0;
}