Recently I discovered that Macrium's Reflect did not image drives. Ok. That's not a big deal since the paid version has the ability to backup files and folders. However, backing up a usb drive that way does not result in a bootable usb drive should it need to be restored. I was wondering why that was; what about imaging results in a bootable flash drive whereas backing up the individual files does not. I mean, in both cases ALL the files are backed up. And in both cases the usb drive's partition is marked as active. What else is there? Why does bootability fuction with imaging but not with simple backup (and simple restore)?