A hidden optimization cleaning command of vista

For computer optimization, you must have used a lot of tools, such as many optimization and cleaning tools, and later versions of 360 and rising, but I
 
We can use vista's hidden optimization cleaning command to better complete cleaning and optimization.
 
If the system is not cleaned up in time, have you found that your system will be slow?
 
Let's tell you an invincible command hidden by VISTA,
You just need to enter the command in start -- run and then press Enter!
 
It is better than the above optimization and cleaning tools! It's amazing!
 
This command must be executed in two parts. That is to say, you need to enter the command twice,
 
Press ENTER twice. In fact, the first time is personal settings. You will know when you use it.
1. Run cleanmgr/sageset: 99

2. Run cleanmgr/SAGERUN: 99