Program to rewrite the parameters of 1.44MB, 3½ inch floppy disk to its DBR

The following program has been written to rewrite the information of disk parameters in DBR of 1.44Mb, 3½ inch floppy disk, with 80 tracks, 2 heads (sides) and 18 sectors per track.

/* Program to Rewrite the parameters of 1.44MB, 3½ inch floppy disk to its DBR */

# include "dos.h"
# include "stdio.h"

struct boot
{
unsigned char code[3] ; /* Jump Code */
unsigned char system_id[8] ; /* OEM ID and Version*/
int bytes_per_sec ; /* Bytes Per Sector */
char sec_per_clus ; /* Number of Sectors
Per Cluster */
int res_sec ; /* Reserved Sectors */
char fat_copies ; /* Number of FATs */
int root_dir_entry ; /* Number of Root
Directory Entries */
unsigned int no_sects ; /* Number of Total
Sectors */
unsigned char format_id ; /* Media Descriptor
Byte */
int sec_per_fat ; /* Sectors Per FAT */
int sec_per_trk ; /* Sectors Per FAT */
int no_sides ; /* Number of
Sides(Heads) */
int no_sp_res_sect ; /* Number of Hidden
Sectors */
unsigned char rest_code[482] ;/* Rest 482 Bytes code
of DBR */
} ;

struct boot b ;

main( )
{
int val ;

val = absread(0, 1, 0, &b); /* Use For Floppy Disk */

if ( val == -1 )
{
printf ( "\n Disk read Error...bad sector\n" ) ;
exit ( 1 ) ;
}

clrscr ( ) ;
display_info();
getch();

printf("\n Now Recovering BDR of Floppy.....\n");

Recover_with_values();

printf ( "\n Disk Recovered Successfully." ) ;
display_info();

return 0;
}

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