The claim that a full operating system can be compressed from ~3,000MB to 10MB is technically impossible for functional installation media. Such files almost always fall into one of three categories:

A 10MB "highly compressed" file claiming to be Windows 7 Ultimate 64-bit is . It is impossible to compress a full Windows operating system to this size without it being either a non-functional shell or a virus. ⚠️ Why to Avoid This Download

He restarted. The screen went black. Then, the glowing Windows logo appeared—but something was wrong. The startup sound was a distorted, 8-bit chip-tune

: For older hardware, lightweight Linux distros like Lubbuntu or Puppy Linux are safer, faster, and free.