When installing service pack 1 under Windows Vista,a way of uninstalling is also embedded by default should you at any later point of time need to remove the service pack.
What if we no longer need to uninstall service pack,the setup files in this case can be safely removed thereby freeing up disk space in Vista.
Go to Start > Run.
Type the following command :
vsp1cln.exe
This needs to be run under administrative privileges.
The following dialog box will pop up for confirmation :
On typing ‘y’,it will remove the associated uninstaller of service pack thereby making it permanent on your computer.
Once this command is executed,removal of service pack 1 will no longer be possible in Windows Vista.If you really are not sure whether to make service pack permanent or not,it is suggested that you leave the uninstaller as it is.
Hope this has been an informative post.
Peace.