NTBackup can back up the registry as part of the System State and restore fix Sybase dll errors it. Automated System Recovery in Windows XP can also restore the registry. System Restore can back up the registry and restore it as long as Windows is bootable, or from the Windows Recovery Environment .
The Reg Keys are located within the folders with names that begin with HKEY_ . Open the Windows Run dialog box by pressing the Windows + R keys or Command + R keys .
Some hives are volatile and are not stored on disk at all. An example of this is the hive of the branch starting at HKLM\HARDWARE. This hive records information about system hardware and is created each time the system boots and performs hardware detection. Abbreviated HKCC, HKEY_CURRENT_CONFIG contains information gathered at runtime; information stored in this key is not permanently stored on disk, but rather regenerated at boot time. E.g. HKEY_LOCAL_MACHINE\Software\Microsoft\Windows refers to the subkey "Windows" of the subkey "Microsoft" of the subkey "Software" of the HKEY_LOCAL_MACHINE root key.
It is also possible to edit the registry of an offline system from Windows PE or Linux . The registry can be edited through the APIs of the Advanced Windows 32 Base API Library (advapi32.dll). The registry can be manipulated in a number of ways from the command line. The Reg.exe and RegIni.exe utility tools are included in Windows XP and later versions of Windows. Alternative locations for legacy versions of Windows include the Resource Kit CDs or the original Installation CD of Windows.
To delete the Reg Key, right-click it and select Delete from the menu that opens. To edit a Reg Key or string value, click the Reg Key folder to open it.
When applications fail to execute because they request more privileges than they require , this is known as a limited user application bug. Low integrity processes may also use registry virtualization. Windows 2000 Resource Kit contained an unsupported pair of utilities called Regback.exe and RegRest.exe for backup and recovery of the registry. Windows NT 4.0 included RDISK.EXE, a utility to back up and restore the entire registry.
In our example, we’ll edit the Reg Key HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBC.INI\LANDFX by clicking the folder LANDFX in the path of the same name. You’ll see a new key within the key path you right-clicked. Continue expanding folders to locate the Reg Key you need to create, edit, or delete.
Windows will also look for updated policies and apply them periodically, typically every 90 minutes. To remove a key , the key name must be preceded by a minus sign ("-"). Windows Registry can be edited manually using programs such as RegEdit.exe, although these tools do not expose some of the registry’s metadata such as the last modified date.