New
#11
I have a similar unit (different manufacturer), and have no problem plugging in a drive and it shows in Explorer. But I don't put bootable OS drives in there, so, I don't know if that makes a difference. I would use Passmark Diskcheckup to make sure the drive is completely healthy before trusting my image to it. Let it run for 30 minutes or so, to let the values settle in. Also, the verify option in Macrium will tell you if you have a good image too, so that will help.
All I do is make a folder called Macrium-images, and that's where I put mine. You'd probably want to identify yours as Macrium-images-W7. Then make another one for Macrium-images-W10, for future.
If you have enough room on the external drive, I would do an image, then make changes, then do another image - can't hurt. Ideally, once you are done, Macrium can be set to auto-image on a schedule, and you should keep at least 3 images at all times, so please make sure your drive has enough room. Images are approximately 2/3's the size of what's being imaged.
Probably should be fine then. :)