selecting all files in c drive 16GB? My HD is 80GB with 69.99Gb available, I have 10GB available now. I dont have any unnecessary file just 4-5 GB of music. I have low disk space problem. I only have C dirve in my comp no additional partition. When i select all files in c drive its about 16Gb (including all system files and hidden files) however disk spaces used is 58GB. IDK why is it reporting wrong. I deleted all temp files/recycle bin/Internet temp file. Any suggestions how to clear up more space.