@tomxcd @gigabecquerel That was in 1993: SLS/Slackware for my CS diploma thesis software which I implemented on my first PC, a 486 with 8 MB memory, quickly upgraded to 16 MB because I wanted to use g++ and X11 at the same time without memory swapping…
It was a huge pile of about sixty 3,5" disks (HD, i.e. 1.44 MB each) downloaded on a Sun 4 SPARCstation at the university.