Write to floppy

[naruponk]

Hi,

I would like to write something to my floppy, here is my testing code

ORG 100h

mov ah,03h
mov al,1   ;number of sectors
mov ch,0   ;cylinder
mov cl,1   ;sector
mov dh,0   ;head
mov bx,1584h  
int 13h     
              
mov al,bx   ;this just print
mov ah,0eh
int 10h

ret

is this code write something to my floppy?
first i think so but when i tried to remove my floppy this code still not error
so, i confuse that is it write to my floppy or where else ....

how can i write to floppy by specify each byte on that floppy?
anyone has some tiny code to do this?

Please help ....
thanks

[wiz126]

what are you trying to write to the floppy?

[naruponk]

I want to write floppy at Sector1 to be able to boot from that floppy.
I just want to boot from floppy and then screen would show "This is my first boot from floppy".

How can i write an assembly to Sector1 on floppy?
Any kind of data can be written to floppy?

thanks