Control set number
(There is no default value for this entry.)
Identifies the control set the system will use for the next startup, unless an error occurs or the user selects the LastKnownGood control set . If the system started without error, the current control set (indicated by the value of the Current entry) is the default.
For example, if the value of this entry is 0x1, then ControlSet001 is the default control set.