Recycle Bin overview
The Recycle Bin provides a safety net when deleting files or folders. When you delete any of these items from your hard disk, Windows places it in the Recycle Bin and the Recycle Bin icon changes from empty to full. Items deleted from a floppy disk or a network drive are permanently deleted and are not sent to the Recycle Bin.
Items in the Recycle Bin remain there until you decide to permanently delete them from your computer. These items still take up hard disk space and can be undeleted or restored back to their original location. When it fills up, Windows automatically cleans out enough space in the Recycle Bin to accommodate the most recently deleted files and folders.
If you're running low on hard disk space, always remember to empty the Recycle Bin. You can also restrict the size of the Recycle Bin to limit the amount of hard disk space it takes up.
Windows allocates one Recycle Bin for each partition or hard disk. If your hard disk is partitioned, or if you have more than one hard disk in your computer, you can specify a different size for each Recycle Bin.