Interrupt 40h Hard Disk BIOS Pointer to disk BIOS entry when a hard disk controller is installed. The BIOS routines use Int\30 to revector the diskette handler (original Int\13) here so int 40 may be used for hard disk control.
Pointer to disk BIOS entry when a hard disk controller is
installed. The BIOS routines use Int\30 to revector the
diskette handler (original Int\13) here so int 40 may be used
for hard disk control.