Every system works on operations mainly in two modes to safeguard hardware’s computation. The two modes are −
The OS mode in which all the user applications and programs will run. Here, the user instructions are worked on and softwares like playing music is run.
The OS mode in which the hardware loads and its computations are performed. Only privileged instructions are allowed to run in kernel mode. Some common privileged instructions are −
Dual Mode in OS is the switching of modes between the two modes and switching of mode by the OS for computation of process by system. Dual Mode is responsible for the management of processes and avoiding any system crashes.