Which disk is Windows System OS stored? - Restore issue

So I’m able to find and login to urbackup server. Now I’m confused which drive to restore the image. I’m seeing three physical drives. Below is what I see on the restore GUI;

“Please select the drive to which you want to restore your data”
1 Samsung SSD 840 Size: 477G
7 SAMSUNG SSD 850 Size: 477G
10 ST500DM002

Im not an expert in Linux so please someone guide me on how to determine which physical drive my Windows System OS was stored.

Thank you.

Any idea how to determine the location of Windows System OS during restore preparation?

Find out what drive your root is under - otherwise known as “/”.
That will be your system drive by default, unless you did some funky setup for it.