A lot of relevant information, both regarding hardware and software are centralized to run a computer and whenever any operation is carried out in a PC, this centralized database is accessed. This repository is called ‘Windows Registry’ and it has been a regarded almost like a untouchable but it is surprising to know that it helps to keep the amateurs from tampering. However, more informed and advanced users can make changes in the Windows Registry in order to make use of advantageous system tweaks. This is to make the PC work as per one’s preferences and the only condition is to make a back up before venturing out. Utilizing free registry cleaner programs often proves effective in enhancing system performance that are used by many today.

The data stored in the Windows Registry is mainly under categories in binary form, such as Local Machine and Users. In the former you have data about the system in general including system hardware and in the later data about specific users are stored. The information is stored in a tree like structure, same as the arrangement of file, folders, sub folders etc. The folder like structures are called keys and the file like structure are called values.

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To make any changes in this hive it is pertinent to keep a backed up at all times. There are many levels of back up depending upon the level of changes that are intended. Although the system itself takes a back up every 24 hours, a manual timing for system back up can also be created. Registration (REG) files are created for system back up whose main advantage is that with this the individual sub keys are easily stored and the "REG" files are conveniently copied to back up media. "REG" files are in text form, whereas, another form of backup such as Hive files are in binary form. Hive denotes a key with all its sub keys and values in binary format. Hive files are appropriate for backing up large keys with many sub keys. You should download free registry cleaner tools to assist in cleaning up and optimizing this database. Many backup software such as Microsoft Backup for an entire disk, ERUNT (Emergency Recovery Utility NT) and other programs like JV 16 Power Tools are used for back up of system / Registry.

Once the backup is done, one needs to be aware about Regedit that is the editing tool of Windows Registry. Due to its sensitive nature, is not accessible easily and it can be accessed through the Run Line by entering the command “Regedit”. It works in two panes, such as the key pane, where the keys and sub keys look like folders and sub folders and the values that look like files under the value pane. After taking appropriate back up measures from here, the editing can be done. There are certain precautions to be taken. If one is changing an entire key, it’s better to do it through a "REG" file, rather than editing in the directly. Later on, the "REG" file can be merged. The utmost point of caution is there is no ‘UNDO’ key in Regedit. Whatever has been done is stored permanently. It is rather better to be safe and use free registry cleaner applications for your system and running them daily will only prove effective for your personal computer.

Looking at the above information it may quite rightly said that with little education on the subject this highly condensed repository will no longer be a jargon for the users of a PC. Despite the fact that one can edit it and change settings you are encouraged to make use of free registry cleaner software.