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2.1 :Input Output Control System

2.1 :Input Output Control System. Learning Outcomes. Distinguish between Directory Management and Disk Space Management Identify the primary function perform by input / output control system Describe boot process. Directory Management vs Disk Space Management.

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2.1 :Input Output Control System

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  1. 2.1 :Input Output Control System

  2. Learning Outcomes • Distinguish between Directory Management and Disk Space Management • Identify the primary function perform by input / output control system • Describe boot process

  3. Directory Management vs Disk Space Management

  4. Differentiate between File System and IOCS

  5. Function Perform by File System and IOCS

  6. Boot Process • Booting up is a bootstrapping process that starts operating systems when the user turns on a computer system • Booting is the process of starting or restarting a computer

  7. Type of Boot Process • Cold Boot • Warm Boot

  8. Type of Boot Process : Cold Boot • When turning on a computer that has been powered off completely. • Example : by press power button.

  9. Type of Boot Process : Warm Boot • Is the process of restarting a computer that already is powered on. • Example : In Windows XP, warm boot can be perform by : • pressing combination of (CTRL + ALT +DEL) • selecting a button or an option from a list in a dialog box • pressing the reset button on the computer

  10. How a PC Boots Up • The power supply send a signal to the component s in the system unit • The processor finds the ROM chip(s) that contain the BIOS (basic input output system) • The BIOS performs the POST(power-on self test), which checks components such as mouse, keyboard and adapter cards.

  11. Cont… 4. The results of the POST are compared with data in a CMOS chip 5. The BIOS looks for the system file in drive A (floppy disk drive), sometimes a CD or DVD drive and then drive C (hard disk)

  12. 6. The system file and the kernel of the operating system load into memory (RAM) from storage (hard disk) 7. The operating system loads configuration information, may request user information and display the desktop on the screen.

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