For context, a standard high-quality JPEG image is often larger than 10MB. You cannot fit an entire operating system inside the space of a single photograph.
You can download the highly compressed Windows 10 (10MB) from Google Drive using the link below: windows 10 highly compressed 10mb google drive
Current compression technology is impressive, but it isn't magic. The highest compression algorithms (like PAQ or ZPAQ) can compress data significantly, but they cannot break the laws of physics. To compress roughly 16GB of data into 10MB, you would need a compression ratio of nearly 99.9%. For context, a standard high-quality JPEG image is