boot sector

[¦¦]

how to extract boot sector from bootable cd
like
dd if=/dev/hda1 of=/tmp/linux.bin bs=512 count=1

I want to extract the boot sector ( from windows bootable cd) and dont want
to use bootable disk /cd and want to boot with that file from boot.ini

suppose I have windows bootable floppy
can I put them into one file and the boot with that file so that  I dont
have to use floppy

Hope its clear