Monday, July 28, 2008

The Registry Hive

The Registry Hive


In windows, registry is the heart. Every action or settings are recorded inside registry. In Microsoft windows, Registry are divided into subtrees. From the root, there are five subtrees (HKEY_LOCAL_MACHINE, HKEY_CURRENT_USER, HKEY_USERS, HKEY_CLASSES_ROOT, and also HKEY_CURRENT_CONFIG).

1. HKEY_LOCAL_MACHINE
keep all settings for the harware currently installed in the machine.

2. HKEY_CURRENT_USER
Keep all settings for the user profile for the person currently logged on to the machine

3. HKEY_USERS
Keeps the DEFAULT profile which describe how windows will behaves when no one is logged on or keeps settings for new created user.

4. HKEY_CLASSES_ROOT
Keeps all the file association information and the OLE(object linking and embedding) registration database.

5. HKEY_CURRENT_CONFIG
Keeps all the hardware configuration at boot-up time.

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