How To Back Up Windows Registry ?

In windows NT, 2000 and XP not possible to back up registry files while the operating system is running. Registry files remain fully locked all the time while Windows is running, But here You can use an integrated Windows XP's System Restore feature for registry backup.

But using registry editor (regedit.exe) you can to export partial or complete copies of the registry, while the Windows is up, and the exported files can then be backed up with any other traditional file backup utility. You can follow these simple steps to back up the whole registry or any particular registry subkey:

*

Click Start button and then type Regedit in Run option.
*

Locate and then click the root subkey that contains all the child subkeys and values that you want to back up.
*

On the File menu, click Export.
*

In the Save box, you can select the location where you want to save the Registration Entries (.reg) file, type a file name in the File name box, and then click Save.

The exported registry file is about 10-50 MB in size on a typical Windows NT/2000/XP installation.