Teach you how to back up WinXP?

Under normal circumstances, the Windows XP operating system needs to be activated in order to continue to use it. If we need to reactivate a system after reinstalling the system, is there a way to save the activation information of the system before reinstallation? Let's take a look at how the author explains how to back up the Windows XP operating system activation information.

backup wpa.dbl system32 folder and file wpa.bak two out, but also to install back up CDKEY, after using heavy equipment CDKEY After the system is installed directly to two Windows XP can be activated by copying files into the system32 folder. It should be noted that the activation information of such backup is only valid for the system with the same installation information, for example, the hardware environment is unchanged, the hard disk partition is unchanged, and the like.