Which of the following yellow-book defined types of system recovery happens after a system fails
in an uncrontrolled manner in response to a TCB or media failure and the system cannot be
brought to a consistent state?

A.
Recovery restart

B.
System reboot

C.
Emergency system restart

D.
System Cold start

Explanation:
Reference: “Emergency system restart is done after a system fails in an uncontrolled manner in
response to a TCB or media failure. In such cases, TCB and user objects on nonvolatile storage
belonging to processes active at the time of TCB or media failure may be left in an inconsistent
state. The system enters maintenance mode, recovery is performed automatically, and the system
restarts with no user processes in progress after bringing up the system in a consistent state.”