Compression software like WinRAR, 7-Zip, or KGB Archiver works by eliminating redundant data repeating patterns.
: Even "legit" ultra-small builds (under 100 MB) are usually stripped of nearly all functionality, including basic apps like Notepad and Task Manager, just to make them boot. Safer Alternatives for Low Storage Windows 7 Ultimate 64 Bit Highly Compressed -9.28 Mb
In the digital world, if something seems too good to be true, it almost certainly is. The "9.28 MB Windows 7" is a relic of an era of internet "optimization" scams. For a stable and secure experience, users should always stick to official ISO images, which, by necessity, will always be measured in gigabytes, not megabytes. Compression software like WinRAR, 7-Zip, or KGB Archiver