windows does start from usb-stick. correction: it's rdisk(0)partition(4), not rdisk(4) in the boot.ini on windows: multi(0)disk(0)rdisk(0)partition(4) in the boot.ini on usb-stick: multi(0)disk(0)rdisk(1)partition(4) my main problem is, that i don't know where to put the bootfiles, my bios boots from this hd, but i don't know from which partition (there are 4: 1 ntfs (windows), 1 fat ("bios"), 2 unknown (linux backup + EFI?))