So i recently found out that a lot of my disk space was being used up by Adobe illustrator. The cache on this application can go upwards of 11GB even more! Here is how to clear it. Step one : Go to After Effects & Preferences > Media Disk & Cache. Step 2 : Then simply select "Empty Disk Cache" This was done on a mac, but i presume that it works the same on windows. Now you have more free space on your HDD.
