Microsoft Windows Registry Tutorial
The registry is a database that stores settings and options.
WARNING: some mistakes in editing registry can make part of your Windows not work properly. Be careful.
Launching Registry Editor
To look at registry, launch the Registry Editor. Type ❖ Window+r to launch the run dialog, then type “regedit”.
Before you do anything, do a backup.
In Registry Editor, use the menu 〖File ▸ Export〗 to make a backup.
Save the backup as
This might take 2 minutes. On my machine, the saved
file size is 458 megabytes.
Registry data are called key and value pairs. The “key” is like folders. Key can contain other keys. The “value” is like files. A key can contain many other keys and values.
At the root level, there are the following keys. (Note: the “Computer” shown in Registry Edit root is not a key.)
Each of the above is called a “hive”.
A “value” has several possible types. Here is a list of possible types:
|REG_EXPAND_SZ||expandable string. Values between % char are expanded as environment variables|
|REG_DWORD/REG_DWORD_LITTLE_ENDIAN||A integer, ranging from 0 to 2^32-1, with byte order being little-endian.|
|REG_DWORD_BIG_ENDIAN||A integer, ranging from 0 to 2^32-1, with byte order being big-endian|
|REG_LINK||symbolic link (char set in UNICODE)|
|REG_MULTI_SZ||A is a array of strings|
|REG_RESOURCE_REQUIREMENTS_LIST||Resource Requirements List|
|REG_QWORD/REG_QWORD_LITTLE_ENDIAN||A QWORD value, a 64-bit integer (either big- or little-endian, or unspecified) (Introduced in Windows 2000)|
Microsoft Windows Tutorial
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