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Retrieving Deleted Files on the Commodore C64 in 1987

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When I was a sophomore in high school, from 1987 to 1988, my friend Paul and I had Commodore C64 computers. There was a new graphical user interface called GEOS that had transformed the way we interacted with our computers. We used the C64 to play games but also write papers for school. One day Paul called me. He was clearly troubled. He had somehow dragged his newly completed term paper into the trash bin instead of the printer. If I recall correctly, back then they were right next to each other (although the screen shot above shows them separate).  Paul asked if I knew any tricks that could retrieve his paper. There was no undelete function in GEOS. I subscribed to a magazine called Compute's Gazette, for Commodore owners. I remembered seeing an article in the magazine that included code for undeleting files dropped in the GEOS "Waste Basket." All I had to do was type it in by hand, save it to a 5 1/4 inch floppy, drive to Paul's house, and see if the program would