1, garbage collection station. The garbage in the recycle bin occupies the space of the system disk, and the garbage in the recycle bin is cleaned regularly.

2. Temporary documents. The temp folder is a temporary file representing the system and can be deleted.

3. System update file. The system update file is a software package downloaded during the automatic update process. If the system is installed, you can remove it.

4. The computer system caches files. When the computer is running, it will cache the generated caches, so you can delete these caches, which will make a lot of space.

5. Reinstall the system. If the computer is too old, it is suggested to save the necessary files and reinstall the system, which will be greatly improved.