It is better to leave 60G-80G, and leave more when the memory is large enough. System blockage can be reduced. If the C disk is not enough, you can format and slim down.

Drive c is usually used to store or install the system.

For a single operating system installed on the local hard disk, it is the default local system boot hard disk. Most of the files on disk C are mainly composed of documents and system folders such as settings, windows and program files.

C drive folder:

Documents and settings (folders for storing user configuration information).

Windows (folder for storing user configuration information).

Program file (usually the default location for installing software).

Desktop (publicly created folder or file storage directory).

MSOCache (this is the local installation source of Office).