Limit System Restore
If you have one of the newer versions of Windows (ME, 2000, XP) your system automatically makes system restore points. These are backups of your system configurations and windows settings. The restore points can be used to repair your system in the case of a system error. The default settings for the space reserved for these restore points is usually a bit high. Changing this is very simple.
Find the “My Computer” icon on your desktop and right click. Select “Properties”, and in the window that appears click the “System Restore” tab. From here you can either shut off system restore completely, or turn down the amount of hard disk space that it will consume.
To stop system restore check the box that says “Turn off System Restore on all drives”. This will give you no restore points unless you set them manually. Though I almost never use the restore points, I personally do not recommend disabling system restore. It only has to take a Gigabyte or less of space, and it’s nice to have it there if you ever need it.
So, to lower the disk space it will use, you can click a “Settings” button if you have multiple hard drives, or there will be a slider in the main window. Simply move the bar until you have the amount of memory that you want reserved. I would recommend somewhere around 1000 MB, but a bit less will be fine (some of the restore points can be rather large).
After you are finished, click “Apply” and “OK”.
And with those simple steps you have assured yourself of an extra gigabyte or two of disk space!
~ Kyle Larson