OSDev.org

Hello, everybody!
My Boot Loader doesn't work. I copy it to my floppy disk and it doesn't boot when i execute it from vmware.
That's my booting.asm file: Can somebody help me to fix this problem. Maybe i skiped something.
Thanks

Vladaz wrote: Hello, everybody!
My Boot Loader doesn't work. I copy it to my floppy disk and it doesn't boot when i execute it from vmware.
That's my booting.asm file:

Code: Select all

[BITS 16]

[ORG 0x7C00]
???
???mov ah, 0Eh
???mov al, 'A'
???mov bh, 04h
???mov bl, 0
???int 10h

hang:
???jmp hang

times 510-($-$$) db 0
dw 055AAh

Can somebody help me to fix this problem. Maybe i skiped something.
Thanks

Maybe a stupid question.. do you copy it with rawrite.exe or dd (or cp) ?
And another solution, which I had when I wrote my first bootloader, the first rule you write to the screen doesn't appear so you should write to rule number 2 (or when you initialized int 10h correctly).
I think that's caused by the BIOS, unless someone proves me wrong!
And another thing, why should you boot it from VMWARE ? ::)

Hi
Should it not be dw 0AA55h

ASHLEY4.

ASHLEY4 wrote: Hi
Should it not be dw 0AA55h

ASHLEY4.

Could be true.
Although, some BIOSses don't check it and just execute it.
I think you should try either dw 0AA55h or db 55h,0AAh.
Or you should try my first answer.