Running Disk Cleanup this way runs it in “Normal Mode,” which allows you to clean up only one drive at a time.However, one of the more important features of this mode can be found in the “More Options” tab, which allows you to clear all but the most recent System Restore point.To run Disk Cleanup using these advanced settings, use the Run Command /sagerun:xxx, where ‘xxx’ is the same number as before.Internet Options Run Command: With every viewed web page, the pictures, text, etc.

For more information about manipulation of system variables, see Section 5.1.8, “Using System Variables”.

Microsoft warns on this site that users “should not edit the registry unless it is absolutely necessary.