New
#741
That's right.
But actually what I meant was using the Macrium Reflect program installed on one of the OSes (on the other drive) and not the USB Rescue media itself. The USB is only needed if you don't have a working OS environment to fix the drive with issues. But if you can boot up another OS on the same machine, you can use the installed Macrium program to fix the other drive.
I can tell you from experience that the MR thumb for my lappy (Surface Pro 3) and thumb for this Aurora R6 are 100% incompatible. Check both of my specs and you will see why. If similar hardware, nothing fancy, mostly generic drivers....pretty close to 100% it will work. Otherwise...........
Technically, you are 100% correct. Having multiple OS's on one machine is the exception, by far, not the norm. Adding a MR Boot Menu option is far more likely, and is why it is included by MR as an option. Again, need a machine that will at least boot from the HDD/SSD (or a non-lettered partition if the BIOS will accommodate).
Having the thumb and Boot Menu and/or non-lettered partition (least likely) is just good practice. The time to find out you need the Thumb (or DVD) is not when it's the only option.