Several readers have asked about removing the backup files left after a
Service Pack installation. As one reader says, "When you know all is
well, why leave the backup files around?"
OK, the original files are in a hidden folder named %SystemRoot%
\$NtServicePackUninstall$. First, we need to delete this folder. Click
Start and Run, then type "regedit" and press Enter. When RegEdit opens,
indows 2000 Service Pack n. In this case, n represents the Service Pack
number. Delete the key labeled Windows 2000 Service Pack n.
Once you close RegEdit, you'll have a bit of extra disk space.