Find news and information about the latest advances in technology, news and multimedia on the Internet, telecommunications, wireless devices & applications, electronics, smartphones, tablets, ultrabooks, computers, e-mail and the Web.

The Registry

The registry is a heart and soul of any Operating system.  “The computer registry is where all system settings are stored. Whether personal settings or those from an installed application, everything is placed in the registry. Anytime a change is made to your system, the registry is updated to reflect that change. The settings are stored in files, but these files cannot be opened and edited directly. In order to access them you have to open the Registry Editor. From there you can view and make changes.

The registry contains a left and right pane, and everything is arranged in a hierarchy, like Windows Explorer. It consists of three components: keys, subkeys, and values. Collectively these are called hives. The keys are the main categories and are located in the left pane. Below the keys are the subkeys, which may contain more subkeys. When you click on a subkey, the value appears on the right side. Let’s take a look.To open Registry Editor in Windows XP click Start, Run, & type regedit. To open in Vista click start, then type regedit in the “Start Search” text box. It automatically begins to look for the program. After found, it should appear in the area above the text box. Double click the icon.

When the windows appears, notice the main key categories on the left. Each stores certain settings.

  • HKEY_CLASSES_ROOT (HKCR): Deals with settings such as shortcuts and file associations.
  • HKEY_CURRENT_USER (HKCU): Stores data for the current person who’s logged in. These will change depending on who is using the computer.
  • HKEY_LOCAL_MACHINE (HKLM): Contains the settings about a computer’s hardware and software configuration.
  • HKEY_USERS (HKU): Stores information about all users that are logged in.
  • HKEY_CURRENT_CONFIG (HKCC): Stores hardware information used by the computer at startup.

Double clicking one of the keys will reveal subkeys beneath the main key. Clicking on a subkey will display its value(s) in the right pane. In this example the key HKEY_LOCAL_MACHINE and the Components subkey are selected.

To edit a value, right click the one that needs to be changed and click modify.

Change the value where it says “Value data” and click OK.

Manually editing the computer registry is very dangerous if you don’t know what you’re doing. Making the wrong change can screw up your system. Even if you use a registry cleaning application, you still need to be sure the correct entries are being deleted. If you have any doubts, don’t do it. As far as changing values, it’s very rare if you will have to do so, but make sure you backup your registry before making any changes”.

Structure of the Windows Registry

The registry is a hierarchical database that contains data that is critical for the operation of Windows and the applications and services that run on Windows. The data is structured in a tree format. Each node in the tree is called a key. Each key can contain both subkeys and data entries called values. Sometimes, the presence of a key is all the data that an application requires; other times, an application opens a key and uses the values associated with the key. A key can have any number of values, and the values can be in any form. For more information, see Registry Value Types and Registry Element Size Limits.

Each key has a name consisting of one or more printable characters. Key names are not case sensitive. Key names cannot include the backslash character (\), but any other printable character can be used. Value names and data can include the backslash character.

The name of each subkey is unique with respect to the key that is immediately above it in the hierarchy. Key names are not localized into other languages, although values may be.

The following illustration is an example registry key structure as displayed by the Registry Editor.

Gerard M.B. Pean

Sources:    /


Comments on: "Your Operating Systems Part. 2" (13)

  1. Once I originally commented I clicked the -Notify me when new comments are added- checkbox and now every time a remark is added I get 4 emails with the same comment. Is there any approach you possibly can remove me from that service? Thanks!

  2. First-class news it is definitely. I have been awaiting this update.

  3. Great post! Thanks!

  4. I simply want to say I am beginner to blogging and site-building and really liked this web page. More than likely I’m want to bookmark your blog post . You absolutely come with incredible articles and reviews. Kudos for sharing with us your website page.

  5. You should participate in a contest for the most effective blogs on the web. I’ll recommend this web site!

    • Thank you for the kudos. It’s greatly appreciated. Keep coming back and tell your family and friends about this website. don’t forget to subscribe to the blog. Thank you again!

  6. I just want to tell you that I am just newbie to blogging and honestly savored this website. Likely I’m want to bookmark your blog post . You certainly come with excellent stories. Thank you for revealing your website page.

  7. What is the best forex training course I can buy?
    What is the best book on forex trading?

  8. I just like the valuable info you provide to your articles. I’ll bookmark your weblog and take a look at once more here regularly. I’m moderately certain I will be told a lot of new stuff right right here! Good luck for the following!

    • Thank yo very much. I appreciate your comment and I will try hard not to disappoint you. Please subscribe to this blog and tell your friends about it. Thanks again!!!

  9. Someone necessarily help to make severely posts I might state. That is the very first time I frequented your web page and to this point? I amazed with the research you made to create this actual submit incredible. Great task!

    • I’m glad to provide you with information. I will continue to work hard to give you new articles and advice that will benefit you. I really appreciate your comment and it gives me the enthusiasm to work harder to provide meaningful information. Please subscribe to my blog and tell your friends about my website. Thanks again!!!

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s

Tag Cloud

%d bloggers like this: