Control sets are stored in the HKEY_LOCAL_MACHINE subtree, under the SYSTEM key. There may be several control sets depending on how often you change system settings or have problems with the settings you choose. A typical installation of Windows NT will contain four:
Select is also under the SYSTEM key. Select contains the following values:
The most valuable and reliable control set is CurrentControlSet. If you need to modify system settings in the Registry, CurrentControlSet is the best subkey to choose because you know that it is the correct control set. You also know that if your modifications harm your system configuration, you will still be able to boot using the last known good control set.
If you are not sure where to look under the control set for a particular parameter, you can use the Find Key option under the View menu of Registry Editor. Each control set contains two subkeys: Control and Services. Control contains miscellaneous system information such as the size and location of the paging file. Services contains device driver information such as file system drivers, kernel drives, and status information for each.
Article ID: 100010 - Last Review: Oct 31, 2006 - Revision: 1