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3.) c:\windows\$Uninstall----$

These $uninstall----$ folders are used whenever you want to uninstall a windows update. If you delete them, you can not uninstall the update(s), but if the updates are working fine for you, there should be now reason to remove them.

4.) c:\windows\cursors\

This folder contains some custom cursers for windows, if you are happy with the default cursers, or use your own set like Blue Curve, then deleting this wont effect you at all.

5.) c:\windows\driver cache\i386\

NOTE: DON'T DELETE THIS FOLDER, JUST ALL THE FILES INSIDE! This is one you may not want to delete, this takes up a bit of space (about 80mb) but windows uses if you ever add or remove windows components and things like printer drivers. If you're your hardware is already working fine, you don't need this folder on your hard drive. For example, if you delete this folder, and try to install IIS, windows will ask for the CD or Network share with the files on it, if you don't need to add or remove windows components often, deleting this will free up some space for you.

6.) c:\windows\help\

NOTE: DON?T DELETE THIS FOLDER, JUST ALL THE FILES IN SIDE! This folder contains all of the windows help files. If you are like me, and think they having 50mb of help files is a waste, then you probably want to delete it. If you delete this folder and try to view a help file, the Help and Support center will come up with a 404 error. No harm is done, you just can?t view the help files (because you deleted them?). There is also a tours folder inside of the help folder, you can delete everything in this folder also, but windows won?t let you remove the actual folder.

7.) c:\windows\inf\

NOTE: DON'T DELETE THIS FOLDER, JUST ALL THE FILES INSIDE! This folder contains a lot of windows drivers, if you ever add new hardware, windows looks in this folder, then on your CD drive for the latest drivers. Any hardware you might get will probably come with the drivers on a disk, so this folder is just a wasting space on your hard drive with outdated drivers. If all of your hardware is working fine, and you don't plan on adding any new hardware for a while, deleting this wont effect your system at all. If you don't want to delete everything in it, you can go into the folder, press CRTL+F and search for mdm*.* and delete everything that comes up. These are all modem drivers, and it is very unlikely you will ever need them because you either have a modem installed already, or if you do add one, it will come with newer drivers.

8.) c:\windows\srchasst

This folder is the XP Search assistant, if you delete it, windows will just use the classic 2k style search instead, which is more functional and easier to use.

WARNING: Some people have reported problems with this, and have not been able to search, try this at your own risk!!!

9.) c:\windows\downloaded installations\

This folder holds the installers for some programs you download and install, for example, Tweak UI puts its installer in this folder, and so you can repair it or update its components later. Deleting this folder won?t harm any programs I have ever seen, but you should look inside this and see what you are deleting first.

10.) c:\windows\media\

These are the default windows sounds, if you don't want them, deleting them wont hurt anything.

11.) c:\windows\system32\restore\

This is the system restore apps, if you delete this, system restore will no longer work. Before you delete this, you should go into System Restore, and delete all your restore points, and then you should go to the system properties and disable system restore. After that, you can delete this folder, and not worry about system restore slowing down your system or sucking up space.