Making an ISO image of a hard drive means creating a 1-to-1 backup copy that consists of a .iso file. Here are two ways to do just that.

Unallocated Disk Space can be assigned its own volume letter or used to extend another drive. Types of Partitions are also explained.

Now we want to prepare the USB drive for the Windows 10 files and ensure it is bootable. Type “create partition primary” without the quotes and hit enter.