In my haste to install XPEnology, I used a 64GB USB stick that I need regularly for work. I thought I could just clone it to a smaller/cheaper USB later when I could go out and get one. So now I have a cheapo 1GB USB, and no matter what I try (copying files from one to another, cloning using Macrium Reflect, etc.) I can't get the box to boot from the smaller USB. When I switch back to the original 64GB one, everything works again.
How can I switch the boot USB to another USB stick?