Was The Windows Registry A Good Idea?
Non-compliant 32-bit applications can also be redirected in this manner, even though the feature was originally intended for 16-bit applications. With Windows 95, Windows 98, Windows Me and Windows NT, administrators can use a special file to be merged into the registry, called a policy file (POLICY.POL). The policy file allows administrators to prevent non-administrator users from changing registry settings like, for instance, the security level of Internet Explorer and the desktop background wallpaper. The policy file is primarily used in a business with a large number of computers where the business needs to be protected from rogue or careless users. The registry files are named USER.DAT and SYSTEM.DAT are stored in the %WINDIR% directory.
Per-user information (information that would be roughly equivalent to that in HKEY_CURRENT_USER) is stored in hidden directories and files (that start with a period/full stop) within the user’s home directory. Windows NT kernels support redirection of INI file-related APIs into a virtual file in a Registry location such as HKEY_CURRENT_USER using a feature called "InifileMapping".
On NT-based versions of Windows, HKLM contains four subkeys, SAM, SECURITY, SOFTWARE and SYSTEM, that are found within their respective files located in the %SystemRoot%\System32\config folder. A fifth subkey, HARDWARE, is volatile and is created dynamically, and as such is not stored in a file. Information about system hardware drivers and services are located under the SYSTEM subkey, while the SOFTWARE subkey contains software and Windows settings.
This structure makes a manual Windows registry access too tough. Conversely, this also creates multiple points of failure, and the likelihood of one or more files being destroyed is increased. RISC OS also allows applications to be copied into directories easily, as opposed to the separate installation program that typifies Windows applications. Boot.Choices, but potentially anywhere on a network fileserver.
Transferring per-program user settings between Windows machines is tedious, as the Windows registry is largely dependent on the local machine. Note that whole keys and not single values are involved. To restore a Registry key, you can use the "Import" function.
FireEye has a number of tools that can read raw registry hive files and parse relevant keys, values, and data from cells. Recovering deleted data is more complex because some information is lost when elements are deleted.
- Whenever you edit the Registry, make sure you follow the correct instructions and only change what you’re instructed to change.
- The keys that are at the peak of the hierarchy in the registry that begins with HKEY are considered to be hives.
- Random access memory (RAM) is the computer’s physical memory.
- If you don’t know what you’re doing then it is dangerous to play around Registry configuration.
However, it is easier to merge REG files into a Registry by right-clicking the file and choosing "Merge". On many machines the default left double-click on a REG file will also create a merge. I prefer to change the double-click action to "Edit" so that accidental mergers do not happen. REG files do not replace keys but add to them, something to keep in mind. Some experienced PC users prefer to do any actual editing in the exported REG file and then to merge the edited file.
This prevents accidentally doing something to the wrong key. Regedit is a two-pane interface with keys in the left pane (key pane) and value names with the corresponding data in the right pane (value pane). The setup is not unlike Windows Explorer with keys analogous to folders and values analogous to files. This is from Windows 8 but XP/ Vista/ 7 is very similar. Many people Wikidll like to configure Windows their own way and Windows is a system with numerous possible tweaks.
Also, each user profile (if profiles are enabled) has its own USER.DAT in profile’s directory. This key provides runtime information into performance data provided by either the NT kernel itself or other programs that provide performance data. This key is not displayed in the Registry Editor, but it is visible through the registry functions in the Windows API. Abbreviated HKLM, HKEY_LOCAL_MACHINE stores settings that are specific to the local computer.
Differences Between The Win95 And Win98 Registry
Most of these tweaks are actually edits of the Registry. There are several ways to apply Registry changes but the true tweaker often likes to go to the source and tune up the Registry directly with the Windows Registry editor Regedit. Deleted entry recovery requires parsing registry cells in hive files.