How does a computer go from off to login?

Slides:

Advertisements

Similar presentations

Windows Under the Hood.

Advertisements

The Operating System. What is an Operating System? The program that is loaded first and manages the hardware resources like main memory, backing storage.

18th August, 2005 CS431 Course Presentation 1 Booting of a Computer System Harpreet Singh.

Genesis: from raw hardware to processes System booting sequence: how does a machine come into life.

Chapter 9: Understanding System Initialization The Complete Guide To Linux System Administration.

Windows Vista Boot process. All the computer running Windows vista have the same start up sequence: Power-on self test (POST) phase Initial startup phase.

Linux+ Guide to Linux Certification Chapter Nine System Initialization.

Linux Booting Procedure

DIT314 ~ Client Operating System & Administration CHAPTER 4 CONFIGURING HARDWARE DEVICES AND STARTUP PROCESS Prepared By : Suraya Alias.

The power supply performs a self-test. When all voltages and current levels are acceptable, the supply indicates that the power is stable and sends the.

PC BIOS and CMOS.

Startup. Major phases  BIOS  MBR program  Boot loader (Partition boot program )  OS’s kernel Loader  CPU always starts running at x’FFFF0’=1,048,560.

计算机系信息处理实验室 Lecture 5 Startup and Shutdown

BACS 371 Computer Forensics

EET 450 Chapter 2 – How hardware and Software Work Together.

CS2422 Assembly Language & System Programming November 2, 2006.

PC Maintenance: Preparing for A+ Certification

A+ Guide to Managing and Maintaining your PC, 7e

FDISK Partitioning Hard Disks. History We bought our new hard disk drive –Right size for BIOS and OS –Right connections (PATA/SATA) We installed our new.

1 Partitioning a Hard Drive ©Richard Goldman Revised January 8, 2001 Revised December 9, 2002.

The Internal Components of a Personal Computer (PC)

Computer Startup Sequence Overview

Booting in Windows XP Presented and Designed By: Luke Ladd.

COMPUTER MANAGEMENT. System start-up Before switching on a computer, make sure that all the components are properly connected. The computer must be connected.

Linux Booting Procedure

By the end of this lesson you will be able to explain: 1. What is the BOOT process 2. A Cold Boot 3. A Warm Boot.

INTRODUCTION TO PC ARCHITECTURE.

A+ Guide to Managing and Maintaining Your PC Fifth Edition Chapter 14 Managing and Troubleshooting Windows 2000.

Boot Sequence (DOS) for the IBM PC

Computer Hardware PC Operating Systems. What is an operating system? An OS is the interface between the user and the computer hardware It provides the.

DOS  In the 1980s or early 1990s, the operating system that shipped with most PCs was a version of the Disk Operating System (DOS) created by Microsoft:

What is system software and what are its parts? Programs that control operation of computer Two parts are operating systems utility programs.

PC in New Perspective. PC TeleVision Music System Fax Machine Answering Machine Computer.

Hardware Boot Sequence. Vocabulary BIOS = Basic Input Output System UEFI = Unified Extensible Firmware Interface POST= Power On Self Test BR = Boot Record.

Chapter 3 Partitioning Drives using NTFS and FAT32 Prepared by: Khurram N. Shamsi.

Virtual Memory Review Goal: give illusion of a large memory Allow many processes to share single memory Strategy Break physical memory up into blocks (pages)

Basic Input/Output System

Chapter Thirteen Booting Windows XP. Objectives Understand the Windows XP boot process Understand the Windows XP boot process Troubleshoot system restoration.

OPERATING SYSTEMS BY LANDON, KYLE, AND ETHAN. WHAT IS THEIR PURPOSE? (1) manage the computer's resources, such as the central processing unit (2) establish.

Copyright © Genetic Computer School 2008 Computer Systems Architecture SA 8- 0 Lesson 8 Secondary Management.

POST and The Boot Process

Microsoft Window 9X Operating System Richard Goldman © February 28, 2001.

Keyboard Introduction Keyboard is an input device. It is used to give text, numbers and controls as input to computer. The.

Computer Technician POST and The Boot Process ©UNT in Partnership with TEA1.

NON STANDARD HARDWARE By the end of this lesson you will be able to: 1. Identify non standard computer hardware 2. Understand ACRONYMS used to describe.

OS Boot Sequence and File System (implication to “Boot Sector Viruses”) Department of Computer Science Southern Illinois University Edwardsville Spring,

Master Boot Record (MBR)

Overview A) Power on or reset B) 1st stage boot loader C) 2nd stage boot loader D) Operate system.

NT1110 Computer Structure and Logic Unit 8 (Module 5A) COMPUTER OPERATION AND SECURITY.

CS101 Booting A Computer.

TOPIC 6: SYSTEM START-UP AND CONFIGURATION

Files Used in the Boot Process

Computer System Structures

Partitioning a Hard Drive

תרגול 9 – Windows Security

CS101 Booting A Computer.

CONFIGURING HARDWARE DEVICE & START UP PROCESS

Booting Up 15-Nov-18 boot.ppt.

Starting the computer. Every day we are using an operating system and most specifically a Windows operating system but most of us are not aware of the.

BIOS Chapter 6.

CS101 Booting A Computer.

Computer Startup.

Boot Process Mark Stanovich COP 5641 / CIS 4930.

CS101 Booting A Computer.

The Human Computer M Adair.

OS Boot Sequence and File System

OS Boot Sequence and File System

The Computer’s Hardware

Lecture 10 review Booting sequence in Brief

Presentation transcript:

How does a computer go from off to login? Booting a Computer How does a computer go from off to login?

Power On When the power button is pressed the motherboard sends a signal to the PS_ON pin of the P1 Connector (Green Wire). The chipset holds all devices in reset until PWR_OK is received from Power Supply CPU Initializes and loads a program from BIOS which runs the POST and then loads a boot loader from the Master Boot Record

The Master Boot Record The MBR is found on the 1st sector of the 0th Cylinder, using the 0th head MBR Contains Master Boot Loader and the Partition Table

Master Boot Loader Looks at Partition Table for boot partition Calculates physical location of FS Boot Sector Loads FS Boot code to memory Transfers control to FS Boot Code

Different Boots for Different OS MSDOS v1 to 7: IO.sys using msdos.sys Win95/98/ME: IO.sys using msdos.sys WinNT/2K/XP: NTLDR using boot.ini Vista/7 : Boot Manager using B