The file is a hierarchical database (in the form of a tree) composed of groups of keys, subkeys, and finally registry values of different types.

sys files that the older ones will remember and that today would be insufficient to include the gigantic ecosystem of software and hardware that Windows 10 occupies today.Īs we said, this file contains information that Windows continuously refers to during its operation, such as the profiles of each user, the applications installed on the computer, the types of documents that each one can create, the configuration of the properties sheet for folders and application icons, the hardware that exists in the system, the ports that are used and a very long, etc.

ini files that were used in MS-DOS and Windows 3.x configuration files, such as the Autoexec.bat and Config. It came as a more efficient method to replace the text-based. The current registry was first introduced in Windows 98 and is maintained with very few changes until Windows 10 and Windows Server versions.

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