An electronic apparatus and a booting method thereof are provided. The electronic apparatus includes an inputter configured to receive a power-on command, and a memory configured to store task-processing information of tasks for each booting mode. The electronic apparatus further includes a processor configured to, in response to the reception of the power-on command, determine a booting mode, based on use information of the electronic apparatus, determine a priority order and an affinity of each of the tasks for the determined booting mode, based on the task-processing information of the tasks for the determined booting mode, and process the tasks for the determined booting mode, based on the determined priority order and affinity of each of the tasks for the determined booting mode, to boot the electronic apparatus.