The main part of the Windows registry is

The Windows 98 registry consists mainly of two files: System.dat and User.dat. Both files are "system", "implicit", "read-only" attributes. Among them, System. Dat saves system information about the computer, such as hardware device configuration and device driver information. User. The dat stores user feature information such as desktop settings, wallpaper or window color settings. Open the Registry Editor to see that in the left pane, the data in the registry is composed of "primary keys" layer by layer. If the key contains a subkey, a "+" sign will appear on the left side of it to indicate that there is something else in this folder. If this folder is opened by the user, the "+" sign becomes "one", which is the same as the tree structure of Windows Explorer.

The six root keys are:

1. HKEY-CLASSES ROOT;

2. HKEY_CURRENT_USER;

3.HKEY-LOCAL MACHINE;

4. HKEY_USERS, which records the settings of all users on this machine, each user will have its own primary key to save the personal settings, and if this computer does not start multi-user function, all users will share the same device And recorded in the HKEY USERS\\De-fault primary key;

5. HKEY—CURRENT CONFIG, including four configuration information such as font, BIOS, operating system, and printer. The primary key is a copy of HKEY LOCAL MACHINE\\Config\\001;

6. HKEY DYN DATA, the primary key stores dynamic information, it records the current memory settings and usage, some system monitoring programs retrieve information from here to report the current situation, in addition. The data in this primary key is read-only and does not allow the user to change. The registry for Windows Me/2000/XP is similar to Windows 98.