In the registry editor (regedit.exe) you will see six main branches:

HKEY_CLASSES_ROOT (called HKCR): Contains all file associations; the names of the first keys listed within it correspond to the file extensions in question. Shown lower down on the tree are keys which correspond to the names of file types, and their attributes:

1. The default icon (DefaultIcon)
2. The associated action (shell): open, run, etc.

HKEY_CURRENT_USER (called HKCU): current user နဲ့ ဆိုင်တဲ့ setting များကို မှတ်ထားပါတယ် ။ ၆ ခု ထပ်ခွဲထားပါတယ်။

1. control panel: for the control panel
2. software: for software that has been installed
3. AppEvents: for system sounds (the beep or boop when you click on something)
4. keyboard layout: for keyboard settings
5. Remote Access: for remote access over a network
6. Network: Network configuration

HKEY_LOCAL_MACHINE (called HKLM): ဒီအထဲမှာ စက်ရဲ့ hardware information တွေကို သိမ်းထားပါတယ်

1. hardware: for the processor and motherboard
2. enum: for hardware (peripheral devices, etc.)
3. network: for networking and the Internet
4. software: for software configurations shared by all users

HKEY_USERS (called HKU): user တစ်ယောက်ချင်းစီအတွက် သီးခြား setting များကိုသိမ်းပေးပါတယ် ..
HKEY_CURRENT_CONFIG (called HKCC): This is a shortcut to the configuration currently being used in HKLM\Config. It contains settings for the current configuration of the computer.
HKEY_DYN_DATA (called HKDD): This is a shortcut to the components currently being used only in RAM in HKLM\Config (volatile information: exists only temporarily, until the system is reinitialised).