Computer Tutorial

Copying Files From Your Setup Diskettes:-
               
                                                                                                      Most of the files on the DOS setup diskettes are compressed. These compressed files will have the last letter of their extension replaced with an underscore (eg. EDIT.CO_). If you should happen to accidentally delete one from your hard drive, or if one has become corrupt, you may need to copy a single compressed file to your computer.

Make sure the EXPAND.EXE program is in the DOS directory on your hard drive. If it isn't, you can copy it to your DOS directory from Setup disk 1 using the copy command (it's not compressed).
To expand and copy EDIT.CO_ to your computer change to your DOS directory and type EXPAND A:\EDIT.CO_ C:\DOS\EDIT.COM.
If you don't know which disk it's on or what the last letter of the extension is supposed to be, check out PACKING.LST on Setup disk 1. It's an uncompressed text file that contains a list of all the files included on the DOS setup diskettes.