Booting

Switches and cables used to program ENIAC (1946)

Initial program load punched card for the IBM 1130 (1965)

IBM System/3 console from the 1970s. Program load selector switch is lower left; Program load switch is lower right.

PDP-8/E front panel showing the switches used to load the bootstrap program

In computing, booting (or booting up) is the initialization of a computerized system. The system can be a computer or a computer appliance. The booting process can be "hard", after electrical power to the CPU is switched from off to on (in order to diagnose particular hardware errors), or "soft", when those power-on self-tests (POST) can be avoided. Soft booting can be initiated by hardware such as a button press, or by software command. Booting is complete when the normal, operative, runtime environment is attained.

单词	Boot program
释义	Boot program 英语百科 Booting In computing, booting (or booting up) is the initialization of a computerized system. The system can be a computer or a computer appliance. The booting process can be "hard", after electrical power to the CPU is switched from off to on (in order to diagnose particular hardware errors), or "soft", when those power-on self-tests (POST) can be avoided. Soft booting can be initiated by hardware such as a button press, or by software command. Booting is complete when the normal, operative, runtime environment is attained.
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Boot program

Booting