Not sure how that fitted on my 500 GB SSD.

Miracle of MS xD

Some sort of recursive call overflowing I hear. Known win10 bug.

Whoever wrote that Disk Cleanup prog obviously thought that 'mind over matter' cloud be applied in computing as 'software over hardware'.

"How does disk cleanup work?" Answer: it doesn't

clean windows updates and you'll gain 4TB of SSD for free 😱😱

4TB means 4 Terabits. Its alternative calculating!

@DivByZero

Terabits is Tb
TB is terabytes.

So a cleanup no so clean

You see. You are running windows. Bugs everywhere.

@matsaki95 operating systems like GNU/Linux FreeBSD don't have such bugs. And while it's true that you will see bugs in third party software there, there will be a LOT less of them. Windows is just king of bugs. Sad but true.