~30 years ago: - Insert floppy disk into PC's Drive A: and boot DOS - Insert Borland TurboPascal floppy disk into PC's Drive B: and run the Turbo Pascal IDE

~30 years ago: - Insert floppy disk into PC's Drive A: and boot DOS - Insert Borland TurboPascal floppy disk into PC's Drive B: and run the Turbo Pascal IDE - Edit program in IDE, save source code on C: drive folder - Compile, Run, Test and repeat - Swap out boot disk from Drive A: - Insert data disk in Drive A: - Copy sources from C: to A: - Delete the files in C: - Format another data disk (accidentally destroying the sources backed up in earlier step) - Panic and look for Norton Utilities and run it to recover the source files from Drive C: Fun times.