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There are situations where you need to expand a DLL file or any other system file from the Windows setup CD-ROM, in order to replace a corrupt or missing file in the system. Here are the instructions to expand a file from the source CD.
Note: If you have a Service Pack installed, you need to extract the latest copy of the DLL. Your base Windows setup CD (without any Service Packs included) will not help if you already have a Service Pack installed in your system. Therefore, make sure that you're extracting the system file from a slipstreamed Windows setup CD-ROM (SP2 integration), or get the updated files from %Windir%\ServicePackFiles\i386 folder.
There are situations where you need to expand a DLL file or any other system file from the Windows setup CD-ROM, in order to replace a corrupt or missing file in the system. Here are the instructions to expand a file from the source CD.
Note: If you have a Service Pack installed, you need to extract the latest copy of the DLL. Your base Windows setup CD (without any Service Packs included) will not help if you already have a Service Pack installed in your system. Therefore, make sure that you're extracting the system file from a slipstreamed Windows setup CD-ROM (SP2 integration), or get the updated files from %Windir%\ServicePackFiles\i386 folder.
Extracting a file from Windows XP CD-ROM
Insert your Windows setup CD-ROM into the drive. Click Start, Run and type CMD.EXE. Use the Expand command. Here are some examples - to expand a file from the CD:
Examples
Expand d:\i386\hal.dl_ c:\windows\system32\hall.dll
About expand
The expand command is use to take a compressed Windows file and "expand" it to its original format.
Early expand command syntax
Microsoft (R) File Expansion Utility Version 2.00
Copyright (C) Microsoft Corp 1990-1991. All rights reserved.
Expands one or more compressed files.
| EXPAND [-r] |
Source Destination |
| EXPAND -r |
Source [Destination] |
| -r |
Automatically rename expanded files. Only valid for files compressed with -r switch. |
| Source |
Source file specification. Source may be multiple file specifications. Wildcards may be used. |
| Destination |
Destination file / path specification. Destination may be a directory. If Source is multiple files and -r is not specified, Destination must be a directory. Wildcards may not be used. |
Recent expand command syntax
Microsoft (R) File Expansion Utility Version 5.00.2134.1
Copyright (C) Microsoft Corp 1990-1999. All rights reserved.
Expands one or more compressed files.
| EXPAND [-r] |
Source Destination |
| EXPAND -r |
Source [Destination] |
| EXPAND -D |
Source.cab [-F:Files] |
| EXPAND Source.cab |
-F:Files Destination |
| -r |
Rename expanded files. |
| -D |
Display list of files in source. |
| Source |
Source file specification. Wildcards may be used. |
| -F:Files |
Name of files to expand from a .CAB. |
| Destination |
Destination file | path specification.
Destination may be a directory.
If Source is multiple files and -r is not specified, Destination must be a directory. |
Recovery console expand command syntax
Expands a compressed file.
EXPAND source [/F:filespec] [destination] [/Y]
EXPAND source [/F:filespec] /D
| source |
Specifies the file to be expanded. May not include wildcard (* and ?) characters. |
| Destination |
Specifies the directory for the new file. The default is the current directory. |
| /y |
Do not prompt before overwriting an existing file. |
| /f:filespec |
If the source contains more than one file, this parameter is required to identify the< specific file(s) to be expanded. May include wildcards. |
| /d |
Do not expand; only display a directory of the files which are contained in the source. |
The destination might be any directory within the system directories of the current Windows installation, the root of any drive, the local installation sources, or the Cmdcons directory. The destination cannot be removable media. The destination file cannot be read-only. Use the attrib command to remove the read-only attribute. Expand prompts if the destination file already exists unless /Y is used.
Repair expand command syntax
Expands a compressed file.
EXPAND source [/F:filespec] [destination] [/Y]
EXPAND source [/F:filespec] /D
| source |
Specifies the file to be expanded. May not include wildcards. |
| destination |
Specifies the directory for the new file. Default is the current directory. |
| /Y |
Do not prompt before overwriting an existing file. |
| /F:filespec |
If the source contains more than one file, this parameter is required to identify the specific file(s) to be expanded. May include wildcards. |
| /D |
Do not expand; only display a directory of the files which are contained in the source. |
The destination may be any directory within the system directories of the current Windows installation, the root of any drive, the local installation sources, or the cmdcons directory.
The destination cannot be removable media.
The destination file cannot be read-only. Use the ATTRIB command to remove the read-only attribute.
EXPAND prompts if the destination file already exist unless /Y is used. |
