So recently I made a video for my Youtube channel which was 6 something Gigabytes in space. After I finished uploading I deleted all things I used to make it, but my Laptop (Mac Air) is displaying only 11.53G out of the 17G I had before the videos creation. I did have 17G of available space before and I'm 100% sure i've deleted all traces of the video or the programs and videos used to make it. Any ideas why it's displaying such a low amount of space? Iv'e used DiskWave to inspect all my stuff and there is no way I have this little amount of space left!