1, program file or program file (x86) slimming: the installation file directory for storing applications occupies a certain volume, and some larger programs can be uninstalled.

2, ProgramData slimming: not recommended, storing most application software and program configuration information.

3.Windows system home directory: it stores all kinds of temporary files that are updated and backed up by Windows Update every month, including the temporary cache generated after downloading the applications in the app store. Support manual deletion or third-party tool deletion.

The specific path is as follows: C: \ Windows \ Software Distribution \ Download.

4. Personal data of users: including temporary software files or various temporary files generated in the daily operation of users. The amount is not very large, but every little makes a mickle. Because temporary files are hidden files in the system, they can be solved by using third-party security cleaning tools.

5. Other restore point file directory recovery: it stores manually created or automatically generated restore points. It is recommended to adjust the upper limit, but it is not recommended to turn off this function.

The operation is as follows: Right-click my computer, select Properties, and enter the system information summary page.

Then select the system protection function. By default, the system is off. It is recommended to manually open (enable) and configure disk space usage.

6. sys file of sleep dormancy system

Windows8/8. 1 introduced the quick start function, which accelerated the start speed. If the hibernation function is turned on, a system hibernation file pagefile.sys and hlberfil.sys as big as physical memory will be generated on the system disk.

You can use the administrator command prompt powercfg /h on or powercfg /h off to turn hibernation on or off.