I have a system drive clone made with Macrium Reflect. It is not a drive image, but a file-by-file backup of my C: drive. This copy was made onto an external removable hard drive, and is kept locked up in a fire safe along with backup copies of of my already backed-up files.

This makes me feel nice and secure, ready for anything... except (and I bet you're way ahead of me here ) my computer won't boot from a USB drive. I'm guessing that if I had to I could open the computer case, substitute my cloned drive for one of the data drives and then I could boot from the clone to copy it over my corrupted C: drive. If I had to. Is that correct?

That's not as easy a task as it might appear on the surface. To do that I have to drag my large, very heavy computer hutch away from the wall, get behind it to disconnect a lot of cables, move the UPS out of the way, and finally take out a bunch of screws on the back of the tower case to get the side panels off and get access to the hard drives.

I'm betting there is an easier way. How would I go about convincing my Windows 10 operating system to boot to an external USB drive?

tanstaafl.