Chances are, no matter how large your hard disk would be, you will always run out of space. With new files and demands that the Internet supplied, you are bound to use up that space regardless of how large your gigabyte storage would be. So what is a person to do? Well for one, you can always clean up, delete unused files or burn them to a CD or DVD for later reference. But the question is which files would you still want?
Normally, documents and spreadsheets would be retained as they eat up lesser space on computers. Downloaded software, audio and video files would normally be the best space savers when it comes to deleting or backing them up for later use. For some, there will be files that they want to remain on their computer. But get real. It would be crazy to want all those files always there. Just leave out what you want.
For songs, it could be your favorite tunes. Videos can be a couple but not the ones where full length movies are bound to reach 4 gigabytes per file. Software would be best burned to a disk since one time installation would not no longer require them after they are installed.
After deleting these files, it would be best to do a scandisk or defragmenter to optimize your PC. In most cases, they will leave some fragments which if not properly defragmented, will slow your PC performance. Depending on your hard disk size, it can take a while. That is perhaps the downside of having large hard disk storage. It takes longer to defrag.