By a coincidence I have found a "Disk Cleanup" feature in my Windows 7.
I was wondering why it took me nearly ten years to discover it. Now, I know this...
It doesn't work at all! :>
At first everything was looking just good.
The tool itself amazed me with the possibility of releasing nearly... 21 GB additional free space on my main hard disk. Given the fact that I have only a 115 GB SSD it was like a promise of getting 20% of disk space extra.
Then the dream hit the wall of reality:
Eventually it turned out that after three hours of muggling my disk and nearly eating all system resources it managed to release... minus 700 MB of free space.
In other words... it added some more junk!