First of all, you should be able to force the defragger to run even when there's less than 15% free space. It just might not be as efficient.
Second, you can go to Control Panel -> Add/Remove Programs (or Control Panel -> Programs and Features on Vista) and uninstall programs you no longer use. You can also try browsing through your My Documents folder and subfolders for information (pictures, video, old downloads, etc.) that you no longer need and can delete.
Running the disk cleanup utility is a quick way to?
well, first off disk defragmenter doesn't free up any hard drive space, it does what the name implies. Just defrags the memory on your computer. The only way to free up space on your computer is with add/remove programs. You then would remove certain programs you don't use anymore. You can change the drop down box to size so you can see which programs on you computer are taking up the most space then by deleting the ones you use less frequently you will free up hard drive space i.e C:\ see related links for a program which lets you see what is taking up space on your hard drive.
cleanup
Desktop Cleanup Wizard
Disk Cleanup
To remove fragments from a hard drive you can run a disk defragmenter usually found under the advanced tab of the computer properties menu(found by right clicking on my computer or computer)
Metadata cleanup is used to remove the records and data of an crashed Domain Controller or an unsuccesful demotion of a Domain Controller. It is executed on a working domain controller using ntdsutil.
Ocean Cleanup, a project by Boyan Slat to remove floating plastic from the oceans, will employ a few people. A series of platforms have to be made, and a ship and crew deployed to collect and bring back the plastic.
You would dig them up. They are a common, sought after perennial.
To remove unused items from the desktop in Windows, a user can use the Desktop Cleanup Wizard, located in Control Panel > Appearances and Themes > Display.
You should run defrag when you install or remove software. Or once every couple of months just to keep things running faster on your PC.
# Update your anti-virus software. # Run a full scan of your system using the anti-virus software. # Once the scan is successful and the system is clean go to the next item. If not remove all threats and infections before you proceed. # Do a disk clean up. click start>all programs>accessories>system tools> disk cleanup. # Defragment your drive. click start>all programs>accessories>system tools> disk defragmenter. #