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Examining the Regedit User inferface phần 3

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Adding New Keys To add a new key to any registry hive, select the New | Key commands from the Edit menu.

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Nội dung Text: Examining the Regedit User inferface phần 3

  1. Adding New Keys To add a new key to any registry hive, select the New | Key commands from the Edit menu. The procedure is straightforward and very similar to that of creating new folders in Windows Explorer. The new key will be created without prompting the user to provide a name, but you will be able to rename the new key after it has been created. Adding New Value Entries To add new registry value entries, select the New command from the Edit menu, then select the appropriate command, depending on the data type of the value entry to be created. Using Windows XP or Windows Server 2003 version of Regedit.exe, you can create string-value types (REG_SZ, REG_MULTI_SZ, and REG_EXPAND_SZ) and binary values (REG_DWORD or REG_BINARY). The new value entry will be created without prompting the user to provide a name, but you'll be able to rename and edit the value after it has been created. Using the Binary Editor When you select the binary value (REG_BINARY data type) and then select the Modify command from the Edit menu, Regedit.exe opens the Edit Binary Value window (Fig. 3.10). Note that you can use the binary editor to edit a value of any type by selecting the Modify Binary Data command. Enter the data into the Value data field of the Edit Binary Value window. Figure 3.10: The Edit Binary Value window Editing String Values
  2. Select the REG_SZ value in the right pane of the Registry Editor window. Then select the Modify command from the Edit menu to start the String Editor. The Edit String window (Fig. 3.11) allows you to edit string values. Figure 3.11: The Edit String window Editing DWORD Values When you double-click a REG_DWORD registry value entry or highlight an entry of this type and select the Modify command from the Edit menu, the DWORD editor starts (Fig. 3.12). By default, all REG_DWORD data are displayed in hex format. However, you can also display data using decimal format by selecting the appropriate radio button from the Base group at the bottom of the window. Figure 3.12: The Edit DWORD Value window Editing Multi-String Values The Edit Multi-String window (Fig. 3.13) opens when you double-click the multi-string value or select a multi-string value and then choose the Modify command from the Edit menu. This window allows you to edit multi-string values.
  3. Figure 3.13: The Edit Multi-String window Viewing Resource Lists As was already mentioned in Chapter 1, the system registry stores all information on the hardware installed on the computer. The registry even has special data types for this purpose, namely, REG_RESOURCE_LIST, REG_FULL_RESOURCE_DESCRIPTOR, and REG_RESOURCE_REQUIREMENTS_LIST. These data types are only used in the HKEY_LOCAL_MACHINE\HARDWARE registry key. The value entries of these types are viewed in the Resource Lists (Fig. 3.14) and Resources windows (Fig. 3.15). Figure 3.14: The Resource Lists window
  4. Figure 3.15: The Resources window Deleting Registry Keys and Value Entries To delete a registry key or value entry, select the object that you wish to delete and then select the Delete command from the Edit menu. The system will prompt you to confirm your intention to delete the selected key or value entry (Fig. 3.16). Figure 3.16: The system prompts you to confirm your intention to delete a registry key or value entry Note Don't forget to back up the registry hives where you'll be deleting keys or value entries. Registry editors don't provide the capability to undo this operation. After having confirmed the deletion, you will have no other means of restoring the information other than the use of backup copies. As shown in Fig. 3.14, the warning message displayed by the system doesn't specify the name of the key you are about to delete. Before proceeding further, check the name of the selected key and make
  5. sure that you know what you're doing. If you delete something from the HKEY_LOCAL_MACHINE\System\CurrentControlSet, you can restore this key using the Last Known Good configuration (see Chapter 6). The View Menu Commands The View menu contains commands that allow you to select the method of displaying the registry. It contains the following commands: Status Bar Split Display Binary Data Refresh The Status Bar command in the View menu allows the user to hide the status bar. The status bar is useful because it helps you to navigate the registry. For this reason, I recommend that users (at least beginners) don't hide it. The Split option moves the mouse cursor to the divider separating the left and right panes of the Registry Editor window. All you have to do is to move the mouse right or left to find a new position for the divider. After that, the only thing you need to do is to click the left (or right) mouse button. Tip Tip Resizing the Registry Editor window is similar to resizing Explorer or My Computer windows. You just need to move the mouse cursor to the divider, wait until it changes to a double arrow, click the left mouse button and drag the divider left or right. When you are done, release the mouse button. The Display Binary Data command from the View menu, which was introduced with Windows XP and is present in all products of the Windows Server 2003 family, becomes available only after you select one of the value entries listed in the right pane of the Registry Editor window. This command allows you to view the selected data item using one of three formats: Byte, Word, or Dword. Notice that it doesn't allow you to edit the data (if you need to, select the value entry and choose the Modify Binary Data from the Edit menu).
  6. Figure 3.17: The Binary Data window Another option on the View menu is the Refresh command. Note that when you enter changes into the registry, not all of them will immediately be displayed in the Registry Editor window. To refresh the Registry Editor window, select the Refresh command or press . Note Normally, in earlier versions of Windows NT, including Windows NT 4.0, all changes introduced into the system (including the changes to the system registry) come into force only after rebooting the system. Starting with Windows 2000, full- featured Plug and Play support was integrated into the system, resulting in fewer reboots. Windows 2000, Windows XP, and products of the Windows Server 2003 family require fewer reboots than previous versions of Windows NT. However, there are certain modifications that can come into force only after rebooting the system. The Favorites Menu As has already been mentioned, each newer version of Regedit.exe comes with new, enhanced functionality. One of the most useful functions, which was first introduced with Windows 2000 and is also present in Windows XP and Windows Server 2003, is the Favorites menu (Fig. 3.18).
  7. Figure 3.18: The new version of Regedit utility contains a Favorites menu Anyone who frequently searches and edits the registry will appreciate this convenient feature. Using the Favorites menu, you can create a list of the registry keys you edit most frequently and, thus, avoid time-consuming search procedures. To add a registry key to the Favorites list, proceed as follows: 1. Select the registry key that you want to add to the Favorites list. 2. From the Favorites menu, select the Add to Favorites command. 3. The Add to Favorites window will open (Fig. 3.19). You can accept the key name proposed by default, or enter a new name into the Favorite name field. Click OK to add the key to the Favorites list. Figure 3.19: The Add to Favorites dialog Now you will be able to navigate to this key by selecting its name from the Favorites list. If you need to delete the key from the Favorites list, select the Remove Favorite command from the Favorites menu. Select the key you need to delete from this list and click OK.
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