;Find kernel
    push dx
    ;Number of fats * sectors per fat
    movzx eax, byte [number_of_fats]
    movzx ebx, word [sectors_per_fat]
    mul ebx
    ;Divide number of root dir entries by 16
    movzx ebx, word [number_of_root_dir_entries]
    shr ebx, 4

    add eax, ebx ;Add results

    movzx ebx, word [reserved_sectors]
    add eax, ebx  ;Add reserved sectors

    ;C = eax / (sectors_per_track * num_heads)
    mov ebx, eax ;put LBA in ebx
    movzx eax, word [sectors_per_track]
    movzx ecx, word [num_heads]
    mul ecx

    mov esi, ebx ;Put LBA in esi
    mov edi, eax ;Put C in edi

    xchg eax, ebx
    xor edx, edx
    div ebx
    push ax
    ;H = (esi / sectors_per_track) % num_heads
    mov eax, esi
    movzx ebx, word[sectors_per_track]
    xor edx, edx
    div ebx
    push dx
    ;modulo:  a - ((a / b) * b);  ebx - LBA, edi - C
    movzx ebx, word[num_heads]
    xor edx, edx
    div ebx

    ;H is in edx
    pop bx
    add bx, 1 ;S
    pop cx ;C

    xor ax, ax
    mov es, ax
    mov ah,02h
    mov al,10
    mov ch, cl
    mov cl, bl
    mov dh, dl
    pop bx
    mov dl, bl
    mov bx, 0x8000
    int 13h