Windows stores files in a compressed format called CAB files (short for cabinet).
In order to replace a single corrupt or missing file you need to be able to extract it from the CAB files folder.
There is an EXTRACT (EXPAND in WIN2000) program which will find and retrieve the file from the CD for you. You need to know the name of the file you are looking for and also where you want to place it when you find it.
So go to the command (DOS) prompt and check all the CAB files for your ‘missingfile’ at one time with this command.
EXTRACT /Y /A WIN98_21.CAB MISSINGFILE.EXT
This will go through all the CAB files starting at WIN98_21 until it finds the file.
You can see the switches for this by typing EXTRACT /? at the command prompt.
It’s important to start the search at the first CAB file in the directory.
EXPAND works equally well but has a slightly different command structure. To get to the command prompt in Win2000, you can select START, RUN, and type CMD. To access a particular file, type in the proper location and name, but use a -F switch.
For example, to search the CAB files in the I386 folder on the CD rom for the MWWDM.SYS, type the following:
EXPAND D:\I386\*.CAB –F:MWWDM.SYS C:\
This will search all CAB files in the D:I386 folder looking for the file. When it locates the file, it expands it and places it in the C:\ folder.