/* Structure of Disk Address packet format, To be used
by the writeabsolutesectors Function */
struct diskaddrpacket
{
char packetsize ; /* Size of Packet,
generally 10H */
char reserved ; /* Reserved (0) */
int blockcount ; /* Number of Blocks to
Transfer */
char far *bufferaddress ; /* address to Transfer
Buffer */
unsigned long blocknumber[2] ; /* Starting Absolute
Block Number */
} ;
///// Function to get Drive Parameters \\\\\
unsigned long getdrivegeometry (int drive)
{
union REGS i, o ;
struct SREGS s ;
struct geometry g = { 26, 0, 0, 0, 0, 0, 0, 0 } ;
i.h.ah = 0x48 ; /* Function Number 0x48 of INT 13H
Extensions */
i.h.dl = drive; /* Drive Number */
i.x.si = FP_OFF ( (void far*)&g ) ;
s.ds = FP_SEG ( (void far*)&g ) ;
/* Invoke the specified function number of INT 13H
extension with Segment Register Values */
int86x ( 0x13, &i, &o, &s ) ;
printf("\n Head = %lu, Sectors Per Track = %lu, Cylinder =
%lu\n",
g.heads,g.spt,g.cyl);
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