Just a suggestion. Why not just go to the dealer
and buy the OS upgrade disk. It's about $9.00 US.
Saves a lot of time and trouble.

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….