Currently, I have grub as my bootloader.  Windows runs on a slave hard drive and Ubuntu is on the master.I need to set Windows to be the active partition because it requires this for the installing of Windows 7 Service pack 1.Now, simply unplugging the master hard drive will not work because the windows drive does not have a bootloader of it's own, so the computer just sits idle.My question is, is it possible to make windows and Ubuntu both masters with separate bootloaders or is it possible to somehow give priority to the Windows partition with Grub for the time being? 
Setting Windows 7 to active partition
windows;grub