A+ Guide to Managing and Maintaining Your PC Fifth Edition Chapter 12 Supporting Windows 9x.
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Transcript of A+ Guide to Managing and Maintaining Your PC Fifth Edition Chapter 12 Supporting Windows 9x.
A+ Guide to Managing and Maintaining Your PCFifth Edition
Chapter 12
Supporting Windows 9x
2 A+ Guide to Managing and Maintaining Your PC, Fifth Edition
A Compromise Between Windows and DOS The core: a combination of 16-bit and 32-bit
code Memory management
DOS (base, upper, and extended memory) Windows (memory paging and virtual memory)
Device drivers – 16-bit and 32-bit
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Core OS Files
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Virtual Machines
Set of resources made available to an application through predefined application programming interface calls (APIs)
Multiple logical machines within one physical machine
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Virtual Machines (continued)
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Clean Installation
Ignores system settings, including information for hardware and software
Must reinstall all hardware and software Data files can be retained To do a clean installation
The hard drive does have to be formatted, but \Windows folder should be deleted
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Upgrade Installation
Carries forward system settings and information in the current OS
Software and hardware do not need to be reinstalled
Problems in the current OS may be carried forward
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Installation Process Make sure to create the Startup disk Setup options
Typical Portable: when install Windows on a laptop Compact: smallest possible installation Custom: the users can select components
Setup log files Setuplog.txt: records the progress of the installation Detlog.txt: records the hardware detected
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Hands-on Project: Install Windows 98 Do a clean install of Windows 98 Add additional system components (pp. 535) Download service packs or patches (pp. 535) Install a new hardware (pp. 539) Install a new software (pp. 543)
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Configuring the Boot Process
Most done through registry Modify Msdos.sys (pp. 536 and Table 12-3)
Configure initialization files
Use sysedit to open initialization files (Figure 12-14)
Other window files (Table 12-5)
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Windows .ini Files
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Windows 9x Startup Process
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Windows 9x Startup Process (continued)
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The Windows 9x Registry Database of configuration information and
settings for users, hardware, applications, and the OS
Hierarchical database with a treelike, top-to-bottom design
Takes over essential functions of .ini files Supports System.ini and Win.ini for backward
compatibility
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How the Registry Is Organized
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How the Registry Is Organized (continued)
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Recovering from a Corrupted Registry Windows 95 backup of the registry
Maintains backup copy of the two registry files
Windows 98/Me Registry Checker (Figure 12-33)
Automatically backs up registry every day
Keeps last five days of backups
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Recovering from a Corrupted Registry with Windows 98/Me
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Hands-on Project: System Monitor pp. 571 & Figure 12-18
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Hands-on Project: System Configuration Utility pp. 572 & Figure 12-19
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Windows Utilities
System Configuration Utility (Msconfig.exe) (pp. 572)
System File Checker (pp. 568)
Automatic Skip Driver Agent (ADDA) (pp 576)
Dr. Watson (pp. 573)
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Windows 9x Startup Menu Options Normal Logged (\Bootlog.txt) Safe Mode Safe Mode with Network support Step-by-step confirmation Command prompt only Safe Mode command prompt only Previous version of MS-DOS
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If Normal mode has problems, but safe mode does not, check Config.sys and autoexec.bat (step & step
confirmation) System.ini and win.ini (pp. 583)
Trouble Shooting