HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens

      MSC: unsigned _bios_disk(unsigned cmd,struct diskinfo_t *dskinfo)


       - prototype in bios.h

       - cmd   = _DISK_RESET   resets disk system  (INT 13,0)
               = _DISK_STATUS  return disk status  (INT 13,1)
               = _DISK_READ    read disk sectors  (INT 13,2)
               = _DISK_WRITE   write disk sectors  (INT 13,3)
               = _DISK_VERIFY  verify disk sectors  (INT 13,4)
               = _DISK_FORMAT  format disk track  (INT 13,5)

       - dskinfo = pointer to structure containing disk information:

       struct diskinfo_t
          {
          unsigned drive;              - physical drive number
          unsigned head;               - head number
          unsigned track;              - track number
          unsigned sector;             - sector number
          unsigned nsectors;           - sectors to deal with
          void _far *buffer;           - data buffer
          };

       - returns status of operation (AX register, AH contains status)
       - drive numbers represent physical drives (0 = A:, 1 = B:,
         80h = drive 0, 81h = drive 1
       - disk reads should be retried at least 3 times
       - Turbo C uses biosdisk()

       - see  INT 13

Esc or Alt-X to exit _bios_disk Home/PgUp/PgDn/End ←↑↓→