In Chapter 14, you learned to use SFC and DISM commands to find and replace corrupted Windows system files. SFC keeps a log of its actions at C:\Windows\Logs\CBS\CBS.log, and DISM keeps a log at C:\Windows\Logs\DISM\dism.log. Sometimes these logs or BSOD error screens reveal the name and location of corrupted system or device driver files that Windows tools cannot replace. In this situation, you can manually replace the file. To do so, you can use the takeown command to take ownership of a file and the icacls command to get full access to the file. The Microsoft Knowledge Base Article 929833 at support.microsoft.com explains how to use these two commands. Do the following to practice manually replacing a system file: 1. Boot the computer into Safe Mode with Command Prompt. 2. Take ownership and gain full access to the C:\Windows\System32\jscript.dll file. What commands did you use? 3. Rename the jscript.dll file to jscript.dll.hold. Run the sfc /scannow command. Did SFC restore the jscript.dll file? What is the path and file name of the log file that lists repairs? 4. SFC restores a file using files accessed from Windows Update or stored on the Windows setup DVD or other folders on the hard drive. If SFC cannot restore a file, you might find a fresh copy in the C:\Windows\winsxs folder or its subfolders. Search these folders. Did you find a version of jscript.dll that is the same file size as the one in C:\Windows\System32? Other than the C:\Windows\winsxs folder, where else can you find a known good copy of a corrupted system file or device driver file?
In Chapter 14, you learned to use SFC and DISM commands to find and replace corrupted Windows system files. SFC keeps a log of its actions at C:\Windows\Logs\CBS\CBS.log, and DISM keeps a log at C:\Windows\Logs\DISM\dism.log. Sometimes these logs or BSOD error screens reveal the name and location of corrupted system or device driver files that Windows tools cannot replace. In this situation, you can manually replace the file. To do so, you can use the takeown command to take ownership of a file and the icacls command to get full access to the file. The Microsoft Knowledge Base Article 929833 at support.microsoft.com explains how to use these two commands. Do the following to practice manually replacing a system file: 1. Boot the computer into Safe Mode with Command Prompt. 2. Take ownership and gain full access to the C:\Windows\System32\jscript.dll file. What commands did you use? 3. Rename the jscript.dll file to jscript.dll.hold. Run the sfc /scannow command. Did SFC restore the jscript.dll file? What is the path and file name of the log file that lists repairs? 4. SFC restores a file using files accessed from Windows Update or stored on the Windows setup DVD or other folders on the hard drive. If SFC cannot restore a file, you might find a fresh copy in the C:\Windows\winsxs folder or its subfolders. Search these folders. Did you find a version of jscript.dll that is the same file size as the one in C:\Windows\System32? Other than the C:\Windows\winsxs folder, where else can you find a known good copy of a corrupted system file or device driver file?
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Transcribed Image Text:In Chapter 14, you learned to use SFC and DISM commands to
find and replace corrupted Windows system files. SFC keeps a
log of its actions at C:\Windows\Logs\CBS\CBS.log, and DISM
keeps a log at C:\Windows\Logs\DISM\dism.log. Sometimes
these logs or BSOD error screens reveal the name and location
of corrupted system or device driver files that Windows tools
cannot replace. In this situation, you can manually replace the
file. To do so, you can use
the takeown command to take ownership of a file and the icacls
command to get full access to the file. The Microsoft
Knowledge Base Article 929833 at support.microsoft.com
explains how to use these two commands.
Do the following to practice manually replacing a system file:
1. Boot the computer into Safe Mode with Command Prompt.
2. Take ownership and gain full access to the
C:\Windows\System32\jscript.dll file. What commands did you
use?
3. Rename the jscript.dll file to jscript.dll.hold. Run the sfe
/scannow command. Did SFC restore the jscript.dll file? What
is the path and file name of the log file that lists repairs?
4. SFC restores a file using files accessed from Windows Update
or stored on the Windows setup DVD or other folders on the
hard drive. If SFC cannot restore a file, you might find a fresh
copy in the C:\Windows\winsxs folder or its subfolders. Search
these folders. Did you find a version of jscript.dll that is the
same file size as the one in C:\Windows\System32? Other than
the C:\Windows\winsxs folder, where else can you find a known
good copy of a corrupted system file or device driver file?
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