What is the meaning of the registry primary key

1.hkey_classes_root

The primary key is used to manage the file system, which records information about all data files in the Windows operating system, and mainly records the file name suffixes of different files and their corresponding applications. When a user double-clicks on a document, the system can start the appropriate application with this information.

　　2.hkey_current_user

This primary key is used to manage the configuration of the current user. In this primary key we can look up the information about the user, password and so on in the computer.

　3.hkey_local_machine

The primary key is used to manage the configuration of all hardware devices in the system, where the settings for controlling the system and software are stored. Because these settings are set for users who use the Windows system, it is a public configuration information, so it has nothing to do with specific users.

　　4.hkey_users

The primary key is used to manage the configuration information of all the users in the system, and the information of each user in the computer system is kept in the folder, such as some passwords, logos, etc. of the user in the system .

5.hkey_current_config

This primary key is used to manage system configuration for the current system user, such as user-defined desktop management, a list of programs that need to be started, and so on.