Downloading "Highly Compressed" OS builds from unofficial sources is highly dangerous Malware and Rootkits:
Unofficial, heavily modified installers are a prime delivery method for malware. The "installer" might steal personal information or turn your computer into a botnet node. Broken Functionality: windows 10 highly compressed 50mb
Leo discovered that these "miracle" files usually fall into three categories: The Hollow Shell : A file filled with "white noise" that does nothing. The Trojan Horse windows 10 highly compressed 50mb