Totally Nothing...Do-Dads and Fix-Its For the Web.


Cleaning the C: Drive: Part 3 - Automatic Updates

I recommend running the Windows Updates installation process before doing this procedure so you don't delete anything that you might have to download again.  Windows Updates leaves many files laying around in the C:\WINDOWS\SoftwareDistribution after updating itself. These files can be safely deleted.  Simply stop the Automatic Update services and delete all the files in C:\WINDOWS\SoftwareDistribution.  However, don't delete the SoftwareDistribution folder.  Restart the Automatic Updates service and Windows will rebuild the folder and file structure as needed.  If you've never done this, this process could save you several hundred MBs of space.

Cleaning the C: Drive: Part 2 - Hotfixes

After you've installed Windows Updates for a while, you will find that there is a huge assortment of uninstall files in your C:\Windows folder that can be safely removed.  Chances are, you aren't going to uninstall a hotfix unless it causes an issue.  If you go to the C:\Windows directory, you will see folders starting with $NtUninstallKB (typically blue, which means compressed, if you have that folder option selected).  Look at the "Date Modified" in "Details" view (View > Details) and remove any folders that aren't recent.  If it's been years and you've never cleaned these up, there could be more than 100.