chapter 12
DESCRIPTION
Chapter 12. Supporting Windows 9x. 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. Core OS Files. - PowerPoint PPT PresentationTRANSCRIPT
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A+ Guide to Managing and Maintaining Your PCFifth Edition
Chapter 12
Supporting Windows 9x
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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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3 A+ Guide to Managing and Maintaining Your PC, Fifth Edition
Core OS Files
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4 A+ Guide to Managing and Maintaining Your PC, Fifth Edition
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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5 A+ Guide to Managing and Maintaining Your PC, Fifth Edition
Virtual Machines (continued)
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6 A+ Guide to Managing and Maintaining Your PC, Fifth Edition
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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9 A+ Guide to Managing and Maintaining Your PC, Fifth Edition
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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10 A+ Guide to Managing and Maintaining Your PC, Fifth Edition
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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11 A+ Guide to Managing and Maintaining Your PC, Fifth Edition
Windows .ini Files
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12 A+ Guide to Managing and Maintaining Your PC, Fifth Edition
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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22 A+ Guide to Managing and Maintaining Your PC, Fifth Edition
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