<< 10 meg addition to my old IBM PC. OR even smaller: a 30 minute cassette tape on a commodore. >>
Hah! I remember that! Those were the days! (acoustic coupler for modem)
C64= 0 HD, 1 5.25" floppy, & tape drive, also took cartridges that would plug into the keyboard/cpu
small HD, maybe Mac LC III = 160 MB HD
Around the same time I was working for a company that used 286?/386? machines w/ 40 Mb HDs...
cheers,
Gabe