To keep your hard disk drive "lean and mean," you're going to have to empty the Recycle Bin from time to time, especially if you get an error message when you try to save a file saying that there is insufficient disk space.
Caution
Do You Have Enough Room? You should check your hard disk space occasionally to make sure you have enough room to add more files. If you don't have much space left on the drive, you should empty your recycle bin. To check your available disk space, open the My Computer window, click the hard drive icon to select it, and then check the amount of free space listed on the status bar.