New
#1290
Then in theory, if "Time to display list of operating systems" is enabled and time is set to 10 seconds, you should see the screen at boot up offering different boot options. If you've only created rescue media on a flash drive and not a rescue partition on your boot drive, you'll only see Macrium Reflect System Recovery option with your flash drive plugged in. Maybe this post will help: Backup and Restore with Macrium Reflect
In summary, if you haven't created a rescue partition on your boot drive with MR, you should.