I installed Arch Linux and Windows in separate harddrive (not partition, but real spinning disk drive). Each OS has their own boot because I was hoping to move Arch Linux directly to another machine later on. Now I have two booloaders installed in separate drives. I do not want to modify /boot in Arch Linux because that OS will be taken out in the future.
Ideally, I want to bootup Windows's bootloader and have a choice between two bootloaders (grub for linux and windows boot manager for windows), how do I do that? Thanks.