Help with making a Operating system

I have been making a bowling alley operating system and for some reason my kernel wont boot --BOOT-- [BITS 16] [ORG 0x7C00] start: mov si, msg .print: lodsb or al, al jz .kernel mov ah, 0x0E int 0x10 jmp .print .kernel: jmp 0x0000:0x7E00 msg db "BOOT OK - BowlingOS", 13, 10, 0 times 510-($-$$) db 0 dw 0xAA55 --Kernel-- [BITS 16]</p