HKLM\SYSTEM\Select
| Data type | Range | Default value |
|---|---|---|
| REG_DWORD | 0xN | 0xN |
Identifies the control set that was replaced by the LastKnownGood control set. The value of this entry is 0x0 unless the LastKnownGood control set was used to start the system.
For example, if the value of this entry is 0x1, ControlSet001 failed and the LastKnownGood control set was used to start the system.