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Lesson 4: Working with

Disks and DevicesMOAC 70-687: Configuring Windows 8

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Working with Devicesand Drivers

Lesson 4: Working with Disks and Devices

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Device Drivers To communicate with the operating system

running on the computer, each device requiresa software element called a device driver.

The device driver provides the operating systemwith information about a specific device.

o The Properties sheet for a printer includes genericsystem information.

o

Other tabs, such as the Device Settings tab, arebased on hardware-specific information provided bythe device driver.


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Understanding DeviceDrivers

A major part of the Windows 8 installationprocess consists of identifying the devices inthe computer and installing the appropriatedrivers for them.

The Windows 8 installation package (HCL)includes hundreds of drivers for manydifferent devices, which is why manyinstallations finish without any userintervention.

Sometimes you have to supply devicedrivers yourself.


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Understanding DriverComplexity

Virtually every component in a PC requires adevice driver.

Device drivers vary greatly in complexity.

Drivers for many standard computer devicesoperate virtually invisibly.

Some drivers are more complex.

o For example, graphics adapters are self-contained computers in themselves, with theirown processors and memory.


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Creating a DriverUpdate Policy

Keeping up with the drivers for all devicescan be difficult.

Consider whether installing each driver

update is necessary and safe. Test all driver updates before deploying

them, especially in an enterpriseenvironment.

Avoid installing driver updates as soon asthey are released. Wait at least a week ormore for major issues to arise.


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UnderstandingDriver Signing

A signed driver is a device driver thatincludes a digital signature.

The digital signature value is a protected

checksum. A protected checksum is the value of an

algorithmic function that is dependent onthe contents of the data object and that isstored together with the data object.


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Bypassing DigitalSignature Requirements

One of the design imperatives in Windows 8is faster booting.

Depending on system hardware, the interval

during which a user can press the F8 keycan be as small as 200 ms.

Windows 8 has a different method formodifying the boot options.


Deprecated

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Access Advanced Boot Options

The PC settings menu


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The General menu


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The Choose an Option menu


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The Troubleshoot menu


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The Advanced options menu


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The Startup Settings page


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The Startup Settings menu


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Working with Devices Most PCs use Universal Serial Bus (USB)

connections for peripheral devices.

Plug and Play is an integral part of the USB

standard. (IRQs) When you connect a USB printer or other

USB device to a computer running Windows8, the system usually detects it, adds it to theDevices and Printers control panel, andinstalls the appropriate device driver for it.


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Working with Devices

The Devices and Printers control panel


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Working with Devices

The Choose a device or a printer to addto this PC page


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Supplying Drivers DuringWindows 8 Installation

There are occasions when the installationprogram fails to identify a device. When thisoccurs, one of three things happens:

o The installation program installs a generic driverinstead.

o The installation program leaves the devicewithout a driver and completes the installation.

o The installation program permits you to supply analternate driver or, failing that, halts.


U d h

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Updating Drivers withWindows Update

The Windows Update website was originallydesigned to provide users with operatingsystem updates, but it now includes a large

library of device driver updates as well. If Windows 8 is configured to use automatic

updating, the system will download devicedrivers only for hardware that does not have

a driver installed.

Windows Logo defined!


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Using Device Manager The primary Windows 8 tool for managing

devices and their drivers is Device Manager.

You can use Device Manager to get

information about the devices installed inthe computer as well as to install, update,and troubleshoot device drivers.


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Using Device Manager

The Windows 8 Device Manager


Vi i D i

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Viewing DeviceProperties

Device Manager is capable of displayinginformation in the following four modes:

o Devices by type

o Devices by connectiono Resources by type

o Resources by connection


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Viewing Device Properties

Device Managers Devices By Type display


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Device Managers Devices By Connection display


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Device Managers Resources by Type display


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Device Managers Resources by Connection display


D i M

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Device ManagerProperties Sheet

Most devices have these tabs on theirProperties sheet:

o General

o Drivero Details

o Events

o Resources


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A Device Manager Properties sheet


E bli d Di bli

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Enabling and DisablingDevices

With Device Manager, you can disable anydevice in the computer, using any of theseprocedures:

o Select the device and then choose Disable fromthe Action menu

o Right-click the device and then choose Disablefrom the context menu

o Open the devices Properties sheet and thenclick the Disable button on the Driver tab


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Updating Drivers When you update a driver using Device

Manager, you can point to a location onyour computer where you have already

saved the new driver, or you can run asearch of your computer and the Internet.

Drivers LocationsDEMO


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Update a Device Driver

The How do you want to search fordriver software? page


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Update a Device Driver

The Browse for driver software on your computer page


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Rolling Back Drivers It is not uncommon for new drivers to cause

more problems than they solve, and manyusers find that they would prefer to go back

to the old version. Windows 8 makes this possible with the Roll

Back feature, which you initiate by clickingthe Roll Back Driver button on the Driver tab

of the devices Properties sheet.


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Troubleshooting DriversTo troubleshoot hardware or driver problems, considersome of these techniques:

Open the Properties sheet for the device and check theDevice Status box on the General tab. If the device ismalfunctioning, this tab informs you of its status and

enables you to launch a troubleshooter. Open the Device Manager and delete the device

entirely. Then restart the system and allow Windows 8 todetect and install the device over again.

If the device or driver malfunction prevents the systemfrom running properly, as in the case of a bad graphics

driver that prevents an image from appearing on thescreen, you can start the computer in Safe Mode byusing the Advanced Boot Options procedure.

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