I erased the content of the DOS directory in a old computer operating in DOS 5.0. I want to install DOS again without reformating the hardrive. Therefore, I copied the three DOS 5.0 disk back to the DOS directory. I know that I need to expand those files and I see a file called "EXPAND.EXE", but I don't know how to do it. Can you help before my boss finds out?
Thanks in advance.

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