ASM826 emails this (well, emailed, past tense, a million years ago) flashback to by youth:
Reading it, I was suddenly 25 again. I thought I was the hottest guy in town, because my PC had a 5 MB (removable!!!) Syquist hard drive! Three Letter Intelligence Agency loved them, because you could get all classified and Top Secret and everything all day long, and then lock it in the safe when you went home. Yeah, it wasn't a proper Winchester Drive (the original name came from the nickname of IBM's dual 30 MB Mainframe drives - 30-30, get it?), but it was on a PC!
Of course, they wrecked me for life there, introducing me to Multix (the precursor of Unix) and then Xenix (Unix for IBM PCs) and we were off to the races.
Over the years, I've had Coherent (a Unix for PCs from the late 1980s), PC-VMS (I can still probably whack together a DCL script; back in the day I could read DECnet traces), and then on to Slackware and a 0.99 Linux kernel. 25 floppy disks, and you had to build your own kernel.
But I love this ad, from back when Boston's Rt-128 really was "America's Technology Highway" and giving Silicon Valley a run for its money. And yeah, we wore neck ties, with three piece suits. Err, and had hair, and everything.
Good days, good days.