[ANSWERED] - how to remove windows update files ( and save 800MB ) on your hard disk

Here's how I saved 800MB storage by removing windows update files

start with 

net stop wuauserv

Then

rd /S /Q C:\Windows\SoftwareDistribution

then

rd /S /Q C:\$WINDOWS.~BT

then start update service again

net start wuauserv

The folder size before

The folder size after

so you can see I saved 800MB with this