How to extract the original file from the system installation disk

Often installed software friends may know, some EXE program is easy to virus, and these viruses trojan, like to modify system files, the usual anti-virus software can not be poisoned the system files back to the original, so in addition to reloading and from other machines copy there is another way?

can also be extracted from the installation of the most original, most insured "original" File! But the files on the installation disk are not directly copied/pasted, and XP and vista/2008 are extracted differently because they use different installation methods.

　　First, the file to extract the XP installation disk

If you look closely at the files of the XP Setup disk, you can see that most of the files in the I386 directory are "explorer." Ex_ "This kind of file name, in fact it is a compressed file, file name and the file name to press out the same, but the extension and file size is different, so directly change the suffix is not available."

There are two ways to extract a file:

Method One: Use compression software such as 7-zip to extract this file directly. The mention of 7-zip, in addition to its free also because it defaults to the "7-zip" menu integrated into all files (or folders) right-click menu, easy to use. Of course, the use of WinRAR can also be decompressed.

Method Two: In the window command line state with the XP expand command to extract the file. Usage such as: Expand D:i386explorer.ex_ c:explorer.exe, (Figure 1), meaning to extract the Explorer.ex_ file in the D disk i386 directory below the C packing directory, and named Explorer.exe. The i386 directory is the directory where the installation files in the XP Setup disk are located. This command is often used to repair the system under the Recovery Console.

　　Ii. extract the files from the vista/2008 installation disk

Vista/2008 used a new installation technology, all the installation files are saved in the Sourcesinstall.wim file, this file can not be opened with the General software, only Microsoft-provided ImageX.exe program opened. This program does not have a graphical operating interface, and is now used as an example of Vista to introduce the use of:

The first step: Run the command prompt as an administrator and use the CD command (for example, the "CD i386" command to enter the I386 subdirectory of the current directory) into the folder where ImageX.exe resides.

Step two: Use the Imagex/info h:sourcesinstall.wim command to view the system version that the current installation CD contains. For example, the Vista installation disk has a version of Home Basic, home Premium, Business, Ultimate, and so on. When you see

Windows Vista Ultimate

This paragraph shows that the Mirror of index number 4 is where the Vista Ultimate installation files are located.

Step three: Use commands such as Imagex/mount G:sourcesinstall.wim 4 d:msdn to map the installation image with index number 4 in the G disk installation file to the D:msdn folder. At this time open d:msdn can like to enter the normal folder as the extraction of the original file, do not need to decompress oh.

Fourth step: After the use of the need to uninstall the mirror, corresponding to the operation of the command as follows: Imagex/unmount d:msdn.

Small tip:

1, if cannot use ImageX.exe, enters the control Panel → adds the new hardware, installs the Wimfltr.inf manually.

2, ImageX map to the folder must be real. If the original folder has files, then the mapping file will not disappear, just be the Vista installation file "camouflage" up.

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