'make a copy of the disk before you install the software'.. In the early 80's I ran a small computer company that made hardware for PC's. We sent the software out on 5.25" floppy disks, and an instruction manual I had written. (I said small company). I also did some of the tech support. One customer called a few times, and seemed to be having a lot of trouble with the software installation.

I went through the steps, and he confirmed that he had done each correctly.
1) Make a copy of the software disk
2) Insert the copy of the disk into the computer
3) Run the setup.bat file (Opps no files on the disk Hmmm)

After 3 retries and recalls of making the copy, I had him tell me the steps he took in detail (figuring he was making a backup with the wrong commands or the like).

He replied:
1) I make a copy if the disk
2) I trim off the excess so it will fit in the drive (Opps why is there excess?
because the photo copier only makes 8.5 by 11 copies...

Here's your sign! (for both of us, I rewrote the manual that afternoon)

Tom