computer_basics:operating_system_fundamentals
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| computer_basics:operating_system_fundamentals [2019/12/05 04:02] – mithat | computer_basics:operating_system_fundamentals [2019/12/05 04:11] – [Booting step 6/: Authenticate user] mithat | ||
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| * Many computers use a **BIOS (Basic Input/ | * Many computers use a **BIOS (Basic Input/ | ||
| * The first thing that is loaded into memory and starts running when you turn on. | * The first thing that is loaded into memory and starts running when you turn on. | ||
| - | * Manages some core hardware | + | * Manages some core hardware |
| + | * Handles | ||
| * Usually stored in flash memory or CMOS memory chip. | * Usually stored in flash memory or CMOS memory chip. | ||
| Line 44: | Line 45: | ||
| * Most newer desktops and laptops use **EFI (Extensible Firmware Interface)** instead of a BIOS. | * Most newer desktops and laptops use **EFI (Extensible Firmware Interface)** instead of a BIOS. | ||
| + | * ** UEFI (Unified Extensible Firmware Interface)** is one example. | ||
| * Like a mini OS. | * Like a mini OS. | ||
| * Does everything BIOS does. | * Does everything BIOS does. | ||
| Line 55: | Line 57: | ||
| ===== Booting step 3: Load the operating system ===== | ===== Booting step 3: Load the operating system ===== | ||
| * BIOS or EFI loads an OS's **kernel** into memory. | * BIOS or EFI loads an OS's **kernel** into memory. | ||
| - | * kernel: the central part of the OS | + | * kernel: the central part of the OS. |
| * Usually stored on main storage device. | * Usually stored on main storage device. | ||
| * The OS then loads remainder of what's needed. | * The OS then loads remainder of what's needed. | ||
| ===== Booting step 4: Check the system configuration ===== | ===== Booting step 4: Check the system configuration ===== | ||
| - | * The OS checks the system configuration for **device drivers** | + | * The OS checks the system configuration for **device drivers**. |
| * device driver: utility program that enables communication between the OS and a peripheral device. | * device driver: utility program that enables communication between the OS and a peripheral device. | ||
| * The OS installs and loads the needed drivers. | * The OS installs and loads the needed drivers. | ||
| Line 69: | Line 71: | ||
| * Etc. | * Etc. | ||
| - | ===== Booting step 6/: Authenticate user ===== | + | ===== Booting step 6: Authenticate user ===== |
| - | * Facilitate | + | * Final part of booting is to facilitate user authentication |
| - | * Typically a user name and password or fingerprint scan or special code. | + | |
| ===== OS Function 2: Managing applications ===== | ===== OS Function 2: Managing applications ===== | ||
computer_basics/operating_system_fundamentals.txt · Last modified: 2019/12/06 05:11 by mithat