Control set number
(There is no default value for this entry.)
Identifies the control set that was used to start the system this time. The control set identified by the value of this entry appears in the HKEY_LOCAL_MACHINE\SYSTEM\ CurrentControlSet subkey. If the system started without error, this entry and the Default entry identify the same control set.
For example, if the value of this entry is 0x1, ControlSet001 is the CurrentControlSet .