Macrium Reflect Usage Guide:

How to use Macrium Reflect to Backup/Restore your computer - YouTube

Here is how to create a bootable Flash Drive and partition it to have a single USB Stick containing both the Macrium Reflect Rescue Disk and a Backup Image partition in that rescue disk itself. So if you have a large/fast USB Flash Drive, you can use it to both boot into the Macrium Reflect program without installing and use its second partition to create a backup image of your computer

How to create a Macrium Reflect Bootable Drive - YouTube


What I usually do when I buy a new computer, the moment I turn it on and before even getting into the Windows setup wizard I boot straight away to the Macrium Reflect Rescue Disk, create a full backup of the local disk including all its partitions. That way I always have a backup of the untouched factory image should I ever need it in case I changed my SSD later or had an issue that prevents me to use the local restore option