In Windows, unlike other systems (for example, Linux), the settings of the system and many applications are protected not decentralized, each in its own configuration file, but in a single centralized ordered form. Accordingly, sometimes there is a need to correct them. Of course, the last statement applies only to advanced users, service engineers and system administrators. For ordinary PC users who do not have knowledge about the device line of systems based on the best development of Microsoft Windows (and do not want to get this knowledge), it is better not to edit the registry - this can lead to fatal consequences (data loss and even hardware damage).
So, the regedit program, the registry editor by default "lies" in the WINDOWS directory and is launched through a shortcut or from the command line (you just need to type regedit). After starting, we see the information that the Windows xp registry editortakes from a pair of small system files ntuser.dat, as well as ntuser.dat.log in the directory C: \ Documents and Settings \ Username (responsible for creating the HKEY_CURRENT_USER section when a user logs in for the first time). In addition, the registry bushes are stored in the C: \ Windows \ SYSTEM32CONFIG directory in the SECURTY files (HKLMSecurity section), SAM (HKLMSAM), Software (HKLMSoftware), System (HKLMSystem and HCC), Defaullt (HKEY_USERS.Default). This path also contains files with the log extension for any type of registry hive where significant changes are logged. There are also copies of registry bushes with the sav extension, which are nuggets at the time the text phase of the system installation was completed.
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