Module 3: Resolving Boot Process Issues

Overview

Understanding the Boot Process

Using Advanced Boot Options

Using the Boot.ini file to Change Startup Behavior

Using the Recovery Console to Start the Computer

Lesson: Understanding the Boot Process

Multimedia: Examining the Microsoft Windows XP Boot Process

What Are Control Sets?

How the LastKnownGood Configuration Works

Guidelines for Using the LastKnownGood Configuration

Multimedia: Examining the Microsoft Windows XP Boot Process

Configuration settings determine when the control sets are usedConfiguration settings determine when the control sets are used

For example, the LastKnownGood configuration points to the last control set that was used to successfully start the computer

Configurations are stored in:

HKEY_LOCAL_MACHINE\SYSTEM\SELECT

For example, the LastKnownGood configuration points to the last control set that was used to successfully start the computer

Configurations are stored in:

HKEY_LOCAL_MACHINE\SYSTEM\SELECT

What Are Control Sets?

Control sets determine system settingsControl sets determine system settingsA control set:

Includes a registry subkey that contains system information, such as the device drivers and services to load and start

Defines the dependencies among those services and devices

Controls sets are stored in:

HKEY_LOCAL_MACHINE\SYSTEM

A control set:

Includes a registry subkey that contains system information, such as the device drivers and services to load and start

Defines the dependencies among those services and devices

Controls sets are stored in:

HKEY_LOCAL_MACHINE\SYSTEM

How the LastKnownGood Configuration Works

The LastKnownGood configuration is:The LastKnownGood configuration is:Automatically updated after each successful logon

A safe boot option when the default configuration does not work

Automatically updated after each successful logon

A safe boot option when the default configuration does not work

Yes

No

RestartRestart

Shut downShut down

Use LastKnownGood

configuration

Use LastKnownGood

configuration

Current configuration

copied to LastKnownGood by way of Clone

Current configuration

copied to LastKnownGood by way of Clone

Successfulboot?

YesSuccessful

logon?

Start a computer running Windows XP Professional by using Default

configuration

Start a computer running Windows XP Professional by using Default

configuration

Demonstration: Controlling System Settings During the Boot Process

The control sets

The SELECT subkey and configurations, including LastKnownGood

The control sets

The SELECT subkey and configurations, including LastKnownGood

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Do not use the LastKnownGood configuration for:Do not use the LastKnownGood configuration for:

Hardware failures, or missing or corrupted files Hardware failures, or missing or corrupted files

Guidelines for Using the LastKnownGood Configuration

Use the LastKnownGood configuration when:Use the LastKnownGood configuration when:

The Windows XP Professional operating system stops responding after you install a device driverThe Windows XP Professional operating system stops responding after you install a device driver

You accidentally disable a critical device driverYou accidentally disable a critical device driver

Startup problems that are not related to configuration changesStartup problems that are not related to configuration changes

Lesson: Using Advanced Boot Options

Types of Advanced Boot Options

Why Use Safe Mode to Start a Computer?

Types of Advanced Boot Options

Advanced options include:Advanced options include:

Safe ModeSafe Mode

Enable Boot LoggingEnable Boot Logging

Enable VGA ModeEnable VGA Mode

LastKnownGood ConfigurationLastKnownGood Configuration

Debugging ModeDebugging Mode

Boot NormallyBoot Normally

RebootReboot

Return to OS Choices MenuReturn to OS Choices Menu

Why Use Safe Mode to Start a Computer?

Practice: Using Safe Mode

Boot the computer into Safe Mode and log on to the classroom domainBoot the computer into Safe Mode and log on to the classroom domain

Lesson: Using the Boot.ini File to Change Startup Behavior

What Is the Boot.ini File?

Ways to Modify the Boot.ini File

What is the Boot.ini File?

multi(0)multi(0) rdisk(1)rdisk(1) partition(2)partition(2)

0

1

0

1

1

2

ControllersControllers Physical DisksPhysical Disks Disk PartitionsDisk Partitions

rdiskrdisk

[boot loader]

timeout=30

default=multi(0)disk(0)rdisk(1)partition(2)\WINDOWS

[operating systems]

multi(0)disk(0)rdisk(1)partition(2)\WINDOWS=Microsoft Windows XP

SCSI(0)disk(1)rdisk(0)partition(1)\WINDOWS=Microsoft Windows 2000

[boot loader]

timeout=30

default=multi(0)disk(0)rdisk(1)partition(2)\WINDOWS

[operating systems]

multi(0)disk(0)rdisk(1)partition(2)\WINDOWS=Microsoft Windows XP

SCSI(0)disk(1)rdisk(0)partition(1)\WINDOWS=Microsoft Windows 2000

Ways to Modify the Boot.ini File

You can modify the Boot_ini file to change:You can modify the Boot_ini file to change:

System startup settingsSystem startup settings

Time-out and default settingsTime-out and default settings

Display names and switchesDisplay names and switches

Practice: Modifying Display Names and Switches

Manually edit the Boot.ini file to alter the Windows Display name

Enable the /sos switch

Manually edit the Boot.ini file to alter the Windows Display name

Enable the /sos switch

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Lesson: Using the Recovery Console to Start a Computer

What Is the Recovery Console?

How to Start a Computer by Using the Recovery Console

The Recovery Console is a feature that you can use to start a computer if Safe Mode and other startup options do not work

The Recovery Console is a feature that you can use to start a computer if Safe Mode and other startup options do not work

The most common Recovery Console commands are disable, expand, copy, fixboot, and fixmbrThe most common Recovery Console commands are disable, expand, copy, fixboot, and fixmbr

What Is the Recovery Console?

To use the Recovery Console to start a computer:To use the Recovery Console to start a computer:

Start the Recovery Console from the Operating System Selection menu or from the compact discStart the Recovery Console from the Operating System Selection menu or from the compact disc11

Enter the Administrator account’s passwordEnter the Administrator account’s password33

Select the installation to recoverSelect the installation to recover22

How to Start a Computer by Using the Recovery Console

Practice: Installing the Recovery Console

Install the Recovery Console

Test the Recovery Console installation

Install the Recovery Console

Test the Recovery Console installation

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Lab A: Troubleshooting the Boot Sequence

In this lab, you will read the scenario, identify the boot-process problem, and resolve the problem