/* Create Normal MBR */
void Create_BootNormal_MBR(void)
{
//Qprintf("Creating normal MBR\n");
Read_Physical_Sectors(flags.drive_number,0,0,1,1);
memcpy(sector_buffer,bootnormal_code,SIZE_OF_MBR);
sector_buffer[0x1fe]=0x55;
sector_buffer[0x1ff]=0xaa;
Write_Physical_Sectors(flags.drive_number,0,0,1,1);
}
/* Clear Partition Table */
void Clear_Partition_Table()
{
//Qprintf("Clearing partitiontable for drive %02x..",flags.drive_number);
Read_Physical_Sectors(flags.drive_number, 0, 0, 1, 1);
memset(sector_buffer+0x1be,0,4*16);
Write_Physical_Sectors(flags.drive_number, 0, 0, 1, 1);
//Qprintf("done\n");
}
/* Remove MBR */
void Remove_MBR()
{
int index=0;
Read_Physical_Sectors((flags.drive_number),0,0,1,1);
do
{
sector_buffer[index]=0x00;
index++;
}while(index<0x1be);
Write_Physical_Sectors((flags.drive_number),0,0,1,1);
}
/* Clear the Flag */
void Clear_Flag(int flag_number)
{
if(flags.flag_sector!=0)
{
Read_Physical_Sectors((flags.drive_number),0,0,(flags.flag_sector),1);
sector_buffer[(446+(flag_number-1))]=0;
Write_Physical_Sectors((flags.drive_number),0,0,(flags.flag_sector),1);
}
else
{
printf("\nSector flagging functions have been disabled...Program Terminated.\n");
exit(9);
}
}
/* Create Alternate Master Boot Code */
void Create_Alternate_MBR(void)
{
char home_path[255];
int index=0;
FILE *file_pointer;
//Qprintf("Create_Alternate_MBR()\n");
Read_Physical_Sectors(flags.drive_number,0,0,1,1);
/* Clear old MBR, if any */
memset(sector_buffer,0x00,0x1be);
strcpy(home_path,path);
strcat(home_path,"boot.mbr");
/* Search the directory Free FDISK resides in before searching the PATH */
/* in the environment for the boot.mbr file. */
file_pointer=fopen(home_path,"rb");
if(!file_pointer) file_pointer=fopen(searchpath("boot.mbr"),"rb");
if(!file_pointer)
{
printf("\nThe \"boot.mbr\" file has not been found...Program Terminated.\n");
exit(8);
}
index=0;
do
{
sector_buffer[index]=fgetc(file_pointer);
index++;
}while(index<0x1be);
fclose(file_pointer);
sector_buffer[0x1fe]=0x55;
sector_buffer[0x1ff]=0xaa;
Write_Physical_Sectors(flags.drive_number,0,0,1,1);
}
/* Clear the Boot Sector of a partition */
void Clear_Boot_Sector(int drive,long cylinder,long head,long sector)
{
unsigned char stored_sector_buffer[512];
long index;
/* Save sector_buffer[512] into stored_sector_buffer[512] */
memcpy(stored_sector_buffer,sector_buffer,512);
/* Write all 0xf6 values to sector_buffer[index] */
memset(sector_buffer,0xf6,512);
for (index=0; index < 16; index++)
{
Write_Physical_Sectors(drive,cylinder,head,(sector+index),1);
}
/* Restore sector_buffer[512] to its original contents */
memcpy(sector_buffer,stored_sector_buffer,512);
}
/* Clear the first sector on the hard disk...removes the partitions and MBR. */
void Clear_Entire_Sector_Zero()
{
//Qprintf("Clearing boot sector of drive %x\n", flags.drive_number);
Clear_Sector_Buffer();
Write_Physical_Sectors(flags.drive_number, 0, 0, 1, 1);
}
