I’m creating an app which should get entire .reg file and then execute it. The registry keys are created by me, my installer works on win XP, 7 and 8. But if I change registry file header to Windows Registry Editor Version 5.00 executing failed on windows XP. This error occurs whenever I change OS and header to another version. Second, if you do make a silly mistake, there’s no easy way to undo Registry edits.
As Windows starts it will read the configuration in the registry and know what drivers need to be loaded, what settings to be applied, and what resources need to be allocated in order for this equipment to work. Because this information is stored in the Registry on your hard drive, Windows has this information available each time it boots up. Local and LocalLow are for bits of application data that are truly machine-specific. Roaming is for non-machine specific settings that will follow the user.
Types Of Information In The Registry
However, these are still user-specific settings, obviously, as they’re under the /Users folder. I can’t find any new Windows filesystem convention for system level, non-user-specific settings. If the key or value does not exist or an unrecoverable error occurs, the VI returns the default data. Wire data to the default data input to determine the polymorphic instance to use or manually select the instance.
However, knowing where application settings are stored, it is possible using REGEDIT to export them to a .REG file from where they can be imported to the new system’s Registry. Using the Registry Editor’s Search function, locate the key containing the command for opening GIF files using the original program. (Search for the program name as data.) The name of the key at the root of this branch may be the original ProgID. If this seems to be the case, all you need to do to restore the original actions is to edit HKEY_CLASSES_ROOT\.gif and change its default value back to the original ProgID.
The contents of this branch are stored in the file SYSTEM.DAT in the Windows 9x Registry. Under Windows NT/2000 the physical storage of the Registry data is very different from that used under Windows 9x. System information is kept in a number of different files, most of which are only accessible by the system administrator for security reasons. Most of these files are stored in the System32\Config folder.
- To do this, select the key whose contents you want to back up in the left-hand pane of the Registry Editor and choose Export Registry File from the Registry menu.
- If you’re confident of your ability not to wreck the entire Registry you can save time by creating a backup of just the branch you’re about to change.
- Its filename is REGEDIT.EXE under Windows 9x and REGEDT32.EXE under Windows NT.
- Fortunately, Microsoft has provided a tool specifically designed for the purpose.
- This will create a copy of the contents of the branch as a REG file.
How Is The Registry Structured?
That’s where the lion’s share of the application settings will be. It’s all explained in the Roaming User Data Deployment Guide (Word doc).
Before you delete or edit a value, it’s a good idea to back it up by right-clicking on the key in the Registry Editor and selecting Export. This will save a backup file (with a REG) extension containing all the data within that key; if you repent of your changes, you can just double-click on the REG file to import the old settings. To back up the entire Registry, click on Computer at the top of the tree and select Export. When reinstalling Windows or transferring to a new computer it can be annoying that your software configuration settings are lost. Even if the Registry is backed up, it is inadvisable to restore it to a new computer since much of the information in it is system-dependent and would be inappropriate for the new machine.
HKEY_USERS download is the root key for information that relates to users of the computer, not the machine itself. It holds user preferences such as the display settings, the desktop appearance, system sounds, lists of recently opened files and so on. The contents of HKEY_USERS is stored in files named USER.DAT (or NTUSER.DAT under Windows NT/2000). HKEY_LOCAL_MACHINE is the branch that contains information relating specifically to the computer itself. Examples of this include the installed hardware and software, drivers for the hardware and configuration data for the software.
As you can see the Registry contains information that is not only vital to the use of the operating system, but also essential in allowing you to customize Windows to your particular tastes. The registry is a key component of the Windows operating system. It is so important, that without it, Windows would not even run. When a new piece of hardware or software is installed in Windows, it stores its configuration into the Registry. This allows Windows to retrieve that information at later dates such as when it is starting up.