I spent so many hours watching The Locksmith [1] go "Read..." "Analyze..." "Write..." nibble by nibble, sector by sector.
[1] ftp://ftp.apple.asimov.net/pub/apple_II/documentation/applications/misc/Locksmith%20User%20Manual.pdf
[1] ftp://ftp.apple.asimov.net/pub/apple_II/documentation/applications/misc/Locksmith%20User%20Manual.pdf
The boot sequence was pretty unmistakable (clear screen, switch to 80 columns, cursor in the upper left corner) but quite novel at the time.
Here it is, if you want to experience it yourself: